[{"data":1,"prerenderedAt":742},["ShallowReactive",2],{"catalog:meta":3,"guides:page:\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Frelief-valve:*":258,"guides:topics:hydraulics:\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Frelief-valve:path,title,short":493,"guides:page:\u002Finjection-molding-machine-parts\u002Fhydraulics:diagram":582,"diagram:id:valve-manifold":584,"catalog:parts::HY-CV-06":734},{"categories":4,"machines":132,"zones":212,"totals":255},[5,35,59,122],{"id":6,"name":7,"slug":8,"description":9,"partCount":10,"subcategories":11},"EC","Electrical Components","electrical","Electrical systems and components for injection molding machines including heaters, thermocouples, servo motors, and controllers.",11,[12,17,22,27,31],{"id":13,"name":14,"slug":15,"partCount":16},"EC-CBC","Circuit Boards & Controllers","circuit-boards",4,{"id":18,"name":19,"slug":20,"partCount":21},"EC-CE","Connectors & Cables","connectors-cables",2,{"id":23,"name":24,"slug":25,"partCount":26},"EC-GEP","Servo Motors & Drives","servo-motors",1,{"id":28,"name":29,"slug":30,"partCount":21},"EC-HT","Heaters","heaters",{"id":32,"name":33,"slug":34,"partCount":21},"EC-SF","Safety Components","safety",{"id":36,"name":37,"slug":38,"description":39,"partCount":40,"subcategories":41},"HY","Hydraulic Components","hydraulic","Complete range of hydraulic system components including pumps, valves, motors, and pressure controls for injection molding machines.",14,[42,46,51,55],{"id":43,"name":44,"slug":45,"partCount":26},"HY-AU","Accumulators","accumulators",{"id":47,"name":48,"slug":49,"partCount":50},"HY-CV","Control Valves","control-valves",6,{"id":52,"name":53,"slug":54,"partCount":26},"HY-MO","Monitors & Gauges","monitors-gauges",{"id":56,"name":57,"slug":58,"partCount":50},"HY-PW","Pumps & Motors","pumps-motors",{"id":60,"name":61,"slug":62,"description":63,"partCount":64,"subcategories":65},"MC","Mechanical Components","mechanical","Mechanical parts and assemblies including barrels, screws, tie bars, bushings, platens, and clamping components.",42,[66,71,75,80,85,89,93,97,101,105,109,114,118],{"id":67,"name":68,"slug":69,"partCount":70},"MC-BC","Barrels & Cylinders","barrels-cylinders",5,{"id":72,"name":73,"slug":74,"partCount":16},"MC-SB","Screw Barrels & Seals","screws",{"id":76,"name":77,"slug":78,"partCount":79},"MC-TC","Tie Bars & Columns","tie-bars",7,{"id":81,"name":82,"slug":83,"partCount":84},"MC-GZ","Bushings & Guides","bushings-guides",8,{"id":86,"name":87,"slug":88,"partCount":26},"MC-PP","Platens","platens",{"id":90,"name":91,"slug":92,"partCount":70},"MC-TL","Toggle & Links","toggle-links",{"id":94,"name":95,"slug":96,"partCount":21},"MC-CC","Clamping Components","clamping",{"id":98,"name":99,"slug":100,"partCount":21},"MC-GMP","Tools & Accessories","tools-accessories",{"id":102,"name":103,"slug":104,"partCount":21},"MC-ES","End Caps & Plates","end-caps",{"id":106,"name":107,"slug":108,"partCount":26},"MC-SR","Seals & Rings","seals-rings",{"id":110,"name":111,"slug":112,"partCount":113},"MC-JM","Joints & Mounts","joints-mounts",3,{"id":115,"name":116,"slug":117,"partCount":26},"MC-SG","Safety Guards","safety-guards",{"id":119,"name":120,"slug":121,"partCount":26},"MC-CR","Clamping Mechanism","clamping-mechanism",{"id":123,"name":124,"slug":125,"description":126,"partCount":113,"subcategories":127},"O","Other Components","other","Additional components including filters, cooling systems, lubrication parts, and other auxiliary equipment.",[128],{"id":129,"name":130,"slug":131,"partCount":113},"O-TC","Filters & Cooling","filters-cooling",[133,143,161,172,180,188,194,200,205],{"id":134,"name":135,"slug":134,"series":136,"partCount":142},"haitian","Haitian International",[137,138,139,140,141],"Mars Series (MA)","Jupiter Series (JU)","Zhafir Venus Series (VE)","Zhafir Zeres Series (ZE)","Zhafir Jeres Series (JE)",68,{"id":144,"name":145,"slug":144,"series":146,"partCount":160},"yizumi","Yizumi",[147,148,149,150,151,152,153,154,155,156,157,158,159],"A6 Series","A5-EU Series","A5-N Series","SKIII Series","DP Series","D1 Series","FF Series","FF-M Series","P Series","CG-P Series","VM Series","SPET Series","LSR Series",12,{"id":162,"name":163,"slug":162,"series":164,"partCount":171},"chen-hsong","Chen Hsong",[165,166,167,168,169,170],"JETMASTER MK Series","JETMASTER SVP Series","SUPERMASTER Series","EASYMASTER Series","SPARK Series","JETMASTER C2 Series",10,{"id":173,"name":174,"slug":173,"series":175,"partCount":179},"tederic","Tederic",[176,177,178],"NEO Series","D Series (Two-Platen)","DE Series (All-Electric)",0,{"id":181,"name":182,"slug":181,"series":183,"partCount":179},"borch","Borch",[184,185,186,187],"BU Series (Two-Platen)","BS-III Series (Servo)","BE Series (All-Electric)","BM Series (Multi-color)",{"id":189,"name":190,"slug":189,"series":191,"partCount":179},"log-machine","LOG Machine",[192,193],"LOG-SE Series","LOG-EE Series (All-Electric)",{"id":195,"name":196,"slug":195,"series":197,"partCount":179},"donghua","Donghua",[198,199],"DH Series (Servo)","DH-TP Series (Two-Platen)",{"id":201,"name":202,"slug":201,"series":203,"partCount":179},"sunbun","Sunbun",[204],"Sunbun Servo Series",{"id":206,"name":207,"slug":206,"series":208,"partCount":179},"lijin","L.K. Machinery (Lijin)",[209,210,211],"POTENZA Series","FORZA Series (Two-Platen)","ELETTRICA Series (All-Electric)",[213,217,221,225,228,231,235,238,242,248,251],{"id":214,"number":26,"name":215,"role":216,"partCount":21},"clamp-cylinder","Clamping cylinder","The hydraulic cylinder behind the rear platen. It drives the crosshead that straightens the toggle links, which opens and closes the mold and builds the clamping force.",{"id":218,"number":21,"name":219,"role":220,"partCount":50},"toggle","Toggle mechanism","Links, pins and bushings between the rear and moving platens. They multiply the force of the clamping cylinder and lock the mold shut while plastic is injected.",{"id":222,"number":113,"name":223,"role":224,"partCount":113},"ejector","Ejector","A small cylinder behind the moving platen that pushes the ejector rods and plate forward to release the finished part from the mold.",{"id":78,"number":16,"name":226,"role":227,"partCount":40},"Tie bars & bushings","Four steel columns that join the platens, guide the moving platen and carry the clamping force. Tie bar nuts lock them in place; bushings guide the moving platen along them.",{"id":88,"number":70,"name":229,"role":230,"partCount":21},"Platens & mold plates","The fixed and moving platens carry the two halves of the mold; the rear platen anchors the toggle. Locating rings and clamping plates center and hold the mold.",{"id":232,"number":50,"name":233,"role":234,"partCount":50},"barrel-screw","Barrel, screw & nozzle","The screw turns inside the heated barrel to melt and mix the plastic, then moves forward to inject it through the nozzle into the mold. The screw tip and check ring stop melt from flowing back.",{"id":30,"number":79,"name":236,"role":237,"partCount":113},"Heater bands & sensors","Heater bands around the barrel and nozzle melt the plastic. Thermocouples measure each heating zone so the controller can hold the set temperature.",{"id":239,"number":84,"name":240,"role":241,"partCount":79},"injection-unit","Injection unit","Injection cylinders push the screw forward, the hydraulic (plasticizing) motor turns it, and the carriage moves the unit against the mold on its guide rails.",{"id":243,"number":244,"name":245,"role":246,"partCount":247},"hydraulics",9,"Hydraulic unit","The pump, motor, valves, accumulator, filters and oil cooler in the machine base. They supply and control the oil pressure for every movement of the machine.",16,{"id":8,"number":171,"name":249,"role":250,"partCount":244},"Electrical cabinet","The controller, I\u002FO and drive boards, servo drives, contactors and safety switches that run and protect the machine.",{"id":252,"number":10,"name":253,"role":254,"partCount":21},"feet","Machine feet","Leveling bolts and anti-vibration pads under the machine base that keep the machine level and stop vibration spreading to the floor.",{"parts":256,"subcategories":257},70,23,{"id":259,"title":260,"body":261,"description":464,"diagram":465,"extension":466,"faq":467,"item":480,"lastModified":481,"meta":482,"navigation":483,"order":484,"parts":485,"path":487,"seo":488,"seoTitle":489,"short":490,"stem":491,"__hash__":492},"guides\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Frelief-valve.md","Relief valve of an injection molding machine",{"type":262,"value":263,"toc":452},"minimark",[264,273,278,283,286,290,301,308,317,321,346,350,367,371,397,401,404,422,430,434],[265,266,267,268,272],"p",{},"A relief valve limits the highest pressure in a hydraulic system. It stays closed while the pressure is below its setting and opens when the pressure reaches it, sending oil back to the tank so the pump, hoses and cylinders are never loaded beyond their rating. On an injection molding machine the main relief valve sits on the valve manifold near the pump supply and is often called the ",[269,270,271],"strong",{},"safety valve",". On the drawing, it is the valve mounted on the right side of the manifold block, with its spring housing and adjusting screw outside.",[274,275,277],"h2",{"id":276},"how-a-relief-valve-works","How a relief valve works",[279,280,282],"h3",{"id":281},"direct-acting-relief-valve","Direct-acting relief valve",[265,284,285],{},"A spring holds a poppet or ball on a seat. When the pressure under the poppet multiplied by the seat area exceeds the spring force, the poppet lifts and oil flows to the tank. An adjusting screw sets the spring force, and a lock nut holds the setting. Direct-acting valves respond fast and are simple, but the pressure rises noticeably as more flow passes through them, so they are used for smaller flows and as the pilot stage of larger valves.",[279,287,289],{"id":288},"pilot-operated-relief-valve","Pilot-operated relief valve",[265,291,292,293,296,297,300],{},"A main poppet or spool carries the full flow. System pressure acts under it and, through a small ",[269,294,295],{},"damping orifice",", also in the chamber above it, where a light spring holds it closed. A small direct-acting ",[269,298,299],{},"pilot valve"," on top limits the pressure in that chamber. When the system reaches the pilot setting, the pilot opens, oil flows through the orifice, and the pressure difference across the main stage lifts it so it can pass a large flow with little further rise in pressure.",[265,302,303,304,307],{},"The pilot chamber is usually brought out to a ",[269,305,306],{},"vent port",". Connecting the vent to the tank through a small solenoid valve unloads the pump at low pressure; connecting it to a remote or proportional pilot relief valve lets the pressure be set from elsewhere.",[265,309,310,311,316],{},"The ",[312,313,315],"a",{"href":314},"\u002Fparts\u002Fhy-cv-06\u002F","relief valve \u002F safety valve"," we supply is pilot-operated, with a pressure range of 3–25 MPa and a maximum rating of 31.5 MPa.",[274,318,320],{"id":319},"the-relief-valve-and-pressure-control","The relief valve and pressure control",[322,323,324,337,343],"ul",{},[325,326,327,328,331,332,336],"li",{},"On ",[269,329,330],{},"fixed pump machines",", the ",[312,333,335],{"href":334},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fproportional-valve\u002F","proportional valve"," sets the working pressure for each step, and a mechanical safety relief is set above the highest working pressure as a backstop.",[325,338,327,339,342],{},[269,340,341],{},"variable pump and servo pump machines",", the pump control or the servo drive sets the pressure, and the relief valve stays as protection.",[325,344,345],{},"Other relief valves on the machine include the back-pressure valve used during screw recovery, the relief valve in the accumulator safety block and, on some machines, cross-port relief valves on hydraulic motors.",[274,347,349],{"id":348},"signs-of-a-faulty-relief-valve","Signs of a faulty relief valve",[322,351,352,355,358,361,364],{},[325,353,354],{},"The system cannot reach its set pressure, or the maximum pressure is lower than it used to be.",[325,356,357],{},"No pressure at all: the main stage stays open, or the vent line is open to the tank.",[325,359,360],{},"Pressure higher than the setting, or pressure peaks: the valve is stuck closed, which is dangerous.",[325,362,363],{},"A squeal, whistle or chatter from the valve.",[325,365,366],{},"Hot oil: the relief is passing flow continuously, for example because it is set too close to the working pressure.",[274,368,370],{"id":369},"why-relief-valves-fail","Why relief valves fail",[322,372,373,379,385,391],{},[325,374,375,378],{},[269,376,377],{},"Contamination"," blocks the damping orifice or holds the poppet off its seat.",[325,380,381,384],{},[269,382,383],{},"Erosion"," of the seat and poppet by oil passing at high pressure.",[325,386,387,390],{},[269,388,389],{},"Spring fatigue",", which lowers the opening pressure.",[325,392,393,396],{},[269,394,395],{},"Wrong adjustment",", by someone trying to cure a pressure problem elsewhere in the circuit.",[274,398,400],{"id":399},"testing-and-setting-a-relief-valve","Testing and setting a relief valve",[265,402,403],{},"The relief valve protects people and equipment. Only a trained technician should adjust it, using the values and the procedure in the machine manual, and never above the maximum the manual allows or the rating of the components.",[405,406,407,410,413,416,419],"ol",{},[325,408,409],{},"Fit a calibrated pressure gauge at the test point on the pump outlet.",[325,411,412],{},"Follow the manual's order for setting. On a fixed pump machine, the safety relief must end up above the highest pressure the proportional valve is set to give, or the two valves fight each other.",[325,414,415],{},"In manual mode, build pressure with a movement held against its end stop, as the manual describes.",[325,417,418],{},"Read the pressure, adjust slowly, tighten the lock nut and record the setting.",[325,420,421],{},"If the pressure cannot be raised, will not stay steady or the valve is noisy, clean or replace the valve rather than turning the adjuster further.",[265,423,424,425,429],{},"Our guide to ",[312,426,428],{"href":427},"\u002Fblog\u002Ftroubleshooting-hydraulic-pressure-loss\u002F","troubleshooting hydraulic pressure loss"," explains how a gauge at the pump outlet separates supply problems from leaks further down the circuit.",[274,431,433],{"id":432},"what-to-send-for-a-replacement-quote","What to send for a replacement quote",[265,435,436,437,441,442,446,447,451],{},"The model code from the valve, its size (interface or cartridge size), the mounting (subplate, manifold, inline or cartridge), the pressure range, whether a vent line is connected, and photos of the valve and its nameplate. Add the machine model and serial number, then ",[312,438,440],{"href":439},"\u002Frequest-quote\u002F","request a quote",". For the block it is mounted on, see the ",[312,443,445],{"href":444},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fvalve-manifold\u002F","valve manifold",". The ",[312,448,450],{"href":449},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002F","hydraulic system guide"," shows the other parts it protects.",{"title":453,"searchDepth":21,"depth":21,"links":454},"",[455,459,460,461,462,463],{"id":276,"depth":21,"text":277,"children":456},[457,458],{"id":281,"depth":113,"text":282},{"id":288,"depth":113,"text":289},{"id":319,"depth":21,"text":320},{"id":348,"depth":21,"text":349},{"id":369,"depth":21,"text":370},{"id":399,"depth":21,"text":400},{"id":432,"depth":21,"text":433},"How the relief valve (safety valve) limits pressure in an injection molding machine: direct and pilot-operated types, signs of a faulty valve and safe setting.","valve-manifold","md",[468,471,474,477],{"question":469,"answer":470},"What is the difference between a relief valve and a safety valve?","In hydraulics both names describe a valve that opens at a set pressure and returns oil to the tank to protect the system. On injection molding machines, safety valve usually means the main relief valve that caps the system pressure above the working pressure set by the proportional valve or pump control.",{"question":472,"answer":473},"Why is my relief valve noisy?","A squeal or chatter means oil is flowing through the valve at high pressure, either because the setting is too close to the working pressure or because the valve is worn or unstable. Continuous flow through a relief valve also heats the oil.",{"question":475,"answer":476},"Can a relief valve cause low pressure?","Yes. A valve held open by dirt, a worn seat or a weak spring opens too early. In a pilot-operated relief valve, a blocked damping orifice lets the main stage open at a low pressure, so the system cannot build pressure.",{"question":478,"answer":479},"Who should adjust the relief valve?","Only a trained maintenance technician, with a calibrated gauge and the pressure values from the machine manual. Setting it too high removes the protection for the pump, hoses and cylinders.","relief","2026-11-01",{},true,13,[486],"HY-CV-06","\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Frelief-valve",{"title":260,"description":464},"Hydraulic Relief Valve (Safety Valve): Function and Faults","Relief valve","injection-molding-machine-parts\u002Fhydraulics\u002Frelief-valve","dQpPs1bO3m6sXYqzQnBSoop7PIc33iswK4Do2xvlwJI",[494,498,502,506,510,514,518,522,526,530,534,538,542,546,550,554,558,562,566,570,574,578],{"path":495,"title":496,"short":497},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fhydraulic-circuit","Hydraulic circuit of an injection molding machine","Hydraulic circuit",{"path":499,"title":500,"short":501},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fhydraulic-pump","Hydraulic pump of an injection molding machine","Hydraulic pump types",{"path":503,"title":504,"short":505},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fvane-pump","Vane pump of an injection molding machine","Vane pump",{"path":507,"title":508,"short":509},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fpiston-pump","Piston pump of an injection molding machine","Piston pump",{"path":511,"title":512,"short":513},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fgear-pump","Gear pump of an injection molding machine","Gear pump",{"path":515,"title":516,"short":517},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fservo-pump","Servo pump system of an injection molding machine","Servo pump system",{"path":519,"title":520,"short":521},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fpump-coupling","Pump coupling and bell housing of an injection molding machine","Pump coupling",{"path":523,"title":524,"short":525},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fpower-unit","Hydraulic power unit of an injection molding machine","Hydraulic power unit",{"path":527,"title":528,"short":529},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fdirectional-valve","Solenoid directional valve of an injection molding machine","Directional valve",{"path":531,"title":532,"short":533},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fproportional-valve","Proportional valve of an injection molding machine","Proportional valve",{"path":535,"title":536,"short":537},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fcartridge-valve","Cartridge valve of an injection molding machine","Cartridge valve",{"path":539,"title":540,"short":541},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fhydraulic-check-valve","Hydraulic check valve of an injection molding machine","Hydraulic check valve",{"path":543,"title":544,"short":545},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fvalve-manifold","Valve manifold of an injection molding machine","Valve manifold",{"path":547,"title":548,"short":549},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Faccumulator","Accumulator of an injection molding machine","Accumulator",{"path":551,"title":552,"short":553},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fhydraulic-oil","Hydraulic oil for injection molding machines","Hydraulic oil",{"path":555,"title":556,"short":557},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Foil-temperature","Oil temperature of an injection molding machine","Oil temperature",{"path":559,"title":560,"short":561},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Foil-filter","Hydraulic oil filter of an injection molding machine","Oil filter",{"path":563,"title":564,"short":565},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Foil-cooler","Oil cooler (heat exchanger) of an injection molding machine","Oil cooler",{"path":567,"title":568,"short":569},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Foil-tank","Hydraulic oil tank of an injection molding machine","Oil tank",{"path":571,"title":572,"short":573},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fcooling-water-manifold","Cooling water manifold of an injection molding machine","Cooling water manifold",{"path":575,"title":576,"short":577},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fpressure-gauge","Hydraulic pressure gauge of an injection molding machine","Pressure gauge",{"path":579,"title":580,"short":581},"\u002Finjection-molding-machine-parts\u002Fhydraulics\u002Fpressure-transducer","Pressure transducer of an injection molding machine","Pressure transducer",{"diagram":583},"hydraulic-system",{"diagram":585},{"title":586,"description":587,"base":588,"labels":593,"items":602},"Parts of a hydraulic valve manifold","Line drawing of a hydraulic manifold block with a directional valve, a high-flow solenoid valve, a proportional valve, a relief valve, a cartridge valve and a check valve, numbered.",{"line":589},[590,591,592],"M60 296L226 296","M270 296L320 296L320 260","M440 260L440 300L600 300",[594,598],{"x":595,"y":596,"text":597},66,288,"P",{"x":599,"y":600,"text":601},596,292,"T",[603,621,642,661,680,696,716],{"id":604,"name":605,"role":606,"marker":607,"shapes":611},"block","Manifold block","Steel block drilled with oil passages. The valves bolt onto it or screw into it, which replaces most of the piping between them.",[608,609,608,610],380,336,260,{"solid":612,"line":614},[613],"M153 170h334a3 3 0 0 1 3 3v84a3 3 0 0 1 -3 3h-334a3 3 0 0 1 -3 -3v-84a3 3 0 0 1 3 -3z",[615,616,617,618,619,620],"M264 238a6 6 0 1 0 12 0a6 6 0 1 0 -12 0z","M334 238a6 6 0 1 0 12 0a6 6 0 1 0 -12 0z","M414 238a6 6 0 1 0 12 0a6 6 0 1 0 -12 0z","M268 238a2 2 0 1 0 4 0a2 2 0 1 0 -4 0z","M338 238a2 2 0 1 0 4 0a2 2 0 1 0 -4 0z","M418 238a2 2 0 1 0 4 0a2 2 0 1 0 -4 0z",{"id":622,"name":529,"role":623,"parts":624,"marker":626,"shapes":630},"directional","Solenoid valve that switches oil between the two ports of a cylinder or motor, to start, stop and reverse a movement.",[625],"HY-CV-02",[627,628,627,629],216,24,128,{"solid":631,"line":637,"hidden":640},[632,633,634,635,636],"M160 132h22a2 2 0 0 1 2 2v26a2 2 0 0 1 -2 2h-22a2 2 0 0 1 -2 -2v-26a2 2 0 0 1 2 -2z","M186 128h60a2 2 0 0 1 2 2v38a2 2 0 0 1 -2 2h-60a2 2 0 0 1 -2 -2v-38a2 2 0 0 1 2 -2z","M250 132h22a2 2 0 0 1 2 2v26a2 2 0 0 1 -2 2h-22a2 2 0 0 1 -2 -2v-26a2 2 0 0 1 2 -2z","M164 120h14a1 1 0 0 1 1 1v10a1 1 0 0 1 -1 1h-14a1 1 0 0 1 -1 -1v-10a1 1 0 0 1 1 -1z","M254 120h14a1 1 0 0 1 1 1v10a1 1 0 0 1 -1 1h-14a1 1 0 0 1 -1 -1v-10a1 1 0 0 1 1 -1z",[638,639],"M152 147L158 147","M274 147L280 147",[641],"M192 142h48a2 2 0 0 1 2 2v10a2 2 0 0 1 -2 2h-48a2 2 0 0 1 -2 -2v-10a2 2 0 0 1 2 -2z",{"id":643,"name":644,"role":645,"parts":646,"marker":648,"shapes":651},"high-flow","High-flow solenoid valve","Larger, pilot-operated directional valve: a small solenoid valve on top shifts the main spool. Used for clamping and injection on large machines.",[647],"HY-CV-15",[649,628,649,650],339,96,{"solid":652,"hidden":659},[653,654,655,656,657,658],"M292 120h86a2 2 0 0 1 2 2v46a2 2 0 0 1 -2 2h-86a2 2 0 0 1 -2 -2v-46a2 2 0 0 1 2 -2z","M298 100h16a2 2 0 0 1 2 2v16a2 2 0 0 1 -2 2h-16a2 2 0 0 1 -2 -2v-16a2 2 0 0 1 2 -2z","M318 96h44a2 2 0 0 1 2 2v20a2 2 0 0 1 -2 2h-44a2 2 0 0 1 -2 -2v-20a2 2 0 0 1 2 -2z","M366 100h16a2 2 0 0 1 2 2v16a2 2 0 0 1 -2 2h-16a2 2 0 0 1 -2 -2v-16a2 2 0 0 1 2 -2z","M300 90h12a1 1 0 0 1 1 1v8a1 1 0 0 1 -1 1h-12a1 1 0 0 1 -1 -1v-8a1 1 0 0 1 1 -1z","M368 90h12a1 1 0 0 1 1 1v8a1 1 0 0 1 -1 1h-12a1 1 0 0 1 -1 -1v-8a1 1 0 0 1 1 -1z",[660],"M301 138h68a3 3 0 0 1 3 3v10a3 3 0 0 1 -3 3h-68a3 3 0 0 1 -3 -3v-10a3 3 0 0 1 3 -3z",{"id":662,"name":533,"role":663,"parts":664,"marker":666,"shapes":670},"proportional","Sets pressure or flow in proportion to an electrical signal from the controller, so speeds and pressures follow the profile set on the screen.",[665],"HY-CV-04",[667,628,668,669],468,466,102,{"solid":671,"line":676,"hidden":678},[672,673,674,675],"M400 132h46a2 2 0 0 1 2 2v34a2 2 0 0 1 -2 2h-46a2 2 0 0 1 -2 -2v-34a2 2 0 0 1 2 -2z","M452 138h28a4 4 0 0 1 4 4v18a4 4 0 0 1 -4 4h-28a4 4 0 0 1 -4 -4v-18a4 4 0 0 1 4 -4z","M452 114h28a2 2 0 0 1 2 2v20a2 2 0 0 1 -2 2h-28a2 2 0 0 1 -2 -2v-20a2 2 0 0 1 2 -2z","M462 102h8a2 2 0 0 1 2 2v8a2 2 0 0 1 -2 2h-8a2 2 0 0 1 -2 -2v-8a2 2 0 0 1 2 -2z",[677],"M474 139L474 163",[679],"M406 145h36a2 2 0 0 1 2 2v8a2 2 0 0 1 -2 2h-36a2 2 0 0 1 -2 -2v-8a2 2 0 0 1 2 -2z",{"id":480,"name":490,"role":681,"parts":682,"marker":683,"shapes":687},"Limits the system pressure. When the pressure goes above its setting it opens and sends oil to the tank.",[486],[684,685,686,685],616,214,580,{"solid":688,"line":693},[689,690,691,692],"M492 194h24a2 2 0 0 1 2 2v36a2 2 0 0 1 -2 2h-24a2 2 0 0 1 -2 -2v-36a2 2 0 0 1 2 -2z","M521 200h28a3 3 0 0 1 3 3v22a3 3 0 0 1 -3 3h-28a3 3 0 0 1 -3 -3v-22a3 3 0 0 1 3 -3z","M563 208h6a1 1 0 0 1 1 1v10a1 1 0 0 1 -1 1h-6a1 1 0 0 1 -1 -1v-10a1 1 0 0 1 1 -1z","M572 204h6a2 2 0 0 1 2 2v16a2 2 0 0 1 -2 2h-6a2 2 0 0 1 -2 -2v-16a2 2 0 0 1 2 -2z",[694,695],"M552 214L562 214","M523 214L527 207L532 221L537 207L542 221L547 214",{"id":697,"name":537,"role":698,"parts":699,"marker":701,"shapes":704},"cartridge","Valve inserted into a bore in the block, shown here in section. A spring-loaded poppet opens or closes a large passage; used for high flows in clamping, injection and ejection circuits.",[700],"HY-CV-08",[628,702,703,702],220,136,{"solid":705,"line":709,"hidden":713},[706,707,708],"M138 190h10a2 2 0 0 1 2 2v56a2 2 0 0 1 -2 2h-10a2 2 0 0 1 -2 -2v-56a2 2 0 0 1 2 -2z","M152 204h66a2 2 0 0 1 2 2v28a2 2 0 0 1 -2 2h-66a2 2 0 0 1 -2 -2v-28a2 2 0 0 1 2 -2z","M191 210h24a3 3 0 0 1 3 3v14a3 3 0 0 1 -3 3h-24a3 3 0 0 1 -3 -3v-14a3 3 0 0 1 3 -3z",[710,711,712],"M141 198a2 2 0 1 0 4 0a2 2 0 1 0 -4 0z","M141 242a2 2 0 1 0 4 0a2 2 0 1 0 -4 0z","M152 220L157 212L163 228L169 212L175 228L181 212L187 220",[714,715],"M220 220L250 220","M204 236L204 258",{"id":717,"name":718,"role":719,"parts":720,"marker":722,"shapes":725},"check","Check valve","Lets oil flow one way only, for example from the pump into the circuit, and blocks it from flowing back.",[721],"HY-CV-05",[723,609,723,724],248,308,{"solid":726,"line":728,"hidden":731},[727],"M230 284h36a4 4 0 0 1 4 4v16a4 4 0 0 1 -4 4h-36a4 4 0 0 1 -4 -4v-16a4 4 0 0 1 4 -4z",[729,730],"M236 284L236 308","M260 284L260 308",[732,733],"M244 296a6 6 0 1 0 12 0a6 6 0 1 0 -12 0z","M242 289L242 303",[735],{"partNumber":486,"name":736,"subcategory":47,"subcategoryName":48,"shortDescription":737,"inStock":483,"zone":243,"compatibleMachines":738},"Relief Valve \u002F Safety Valve","Hydraulic relief and safety valve for injection molding machine system pressure protection.",[739,740,741],"Haitian MA Series","Haitian Jupiter Series","Chen Hsong JM Series",1793548983394]