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relief valve

Model / Specifications:A42

Details: Safety valve, relief valve, cast steel safety valve, API relief valve. This type of valve used for the equipment and pipeline of the air, petrile...

ZheJiang HuaGong Valve Co.,Ltd

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A48Y Cast Steel Safety Valve for Steam

Details: A48Y Cast Steel Safety Valve for Steam Model of valve :A48YBody of valve : CI, DI, carbon steel SS304Disc ofvalve : Ni coat...

Luoyang Jinerjian Trading Co., Ltd.

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API Cast Steel Safety Valve

Model / Specifications:DN50-DN1000

Standard or Nonstandard:Standard

Structure:Safety

Pressure: Low-medium-high Pressure

Power:H.P.M.S.

Details: API Cast Steel Safety Valve Size:1/2"-8" or DN15-DN2000Pressure:150LB-800LB or PN16-PN80 or 10K-20KMaterial:WCB,WCC,LCB,LCC,WC6,WC9,C5,C...

Xiamen Liangs Mechanical &Electrical Equipment Co., Ltd.

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MARINE SAFETY VALVES JIS10K/16K/20K/30K/40K

Model / Specifications:SAFETY

Price Range:USD1.0

Standard or Nonstandard:Standard

Material:Casting

Port Size:DN15-DN400

Brand Name:RK MARINE VALVE

Details: CAST STEEL SAFETY VALVECAST BRONZE SAFETY VALVEJIS10K/16K/20K/30K/40KFLANGED TYPE / THREAD TYPEWWW.RKVALVES.COMEMAIL: SALES@RKVALVES.COMPIC: FIGOR

RK Marine Valve Manufacturing Co.,Ltd

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DIN standard spring loaded pressure safety valve

Model / Specifications:900/901/902/911/912

Place of Origin:Wenzhou ZhejiangChina

Standard or Nonstandard:Standard

Structure:Safety

Pressure:MEDIUM

Details: 900 Series DIN standard Safety Valve are mainly applied to the industries such as petroleum & Natural gas, Chemistry, Electric, Metallurgy &am...

China Goole Valve Co.,Ltd

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cast steel safety valve

Model / Specifications:AQZ

Standard or Nonstandard:Standard

Structure:Safety

Pressure:Low Pressure

Power:Pneumatic

Details: The series of AQZ safety cut-off valve catalogue The primary purpose of the safety cut-off valve is to ensure emergency cut-off of gas if the sys...

Leshan Chuantian Gas Equipment Co., Ltd.

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Cast Steel Flanged Check Valve

Trademark:NVF

HS Code:8481

Standard:DIN, BS, ANSI, ISO, JIS, GB

Origin:China

Details:

Ningbo Valve Factory

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Twin Spring Type Safety Valve

Details: Product: Twin spring type safety valve Material: Cast steel Nominal diameter: DN50-DN150 Norminal pressure: PN16/PN25/PN40 WE CAN PRODUCE PER ...

Zhejiang Jingdong Heavy Valve Co.,Ltd.

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Three Way Plug Valve

Packing:Plywood Case

Working Temperature:Normal Temperature (-40??C<T<120??C)

Trademark:Technspert

Export Markets:North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe

Details:

Qingdao Technspert International Trading Co., Ltd.

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Ductile Iron Globe Valve

Thread Position of Valve Rod:Outside Gate Valve

Minimum Order:1 set

Productivity:1000 sets per months

Origin:China

Details:

SYI Industrial Co., Ltd.

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Cast Steel Full Spring Loaded Safety Valve With Handle

Standard or Nonstandard:Standard

Structure:Safety

Pressure:Medium Pressure

Material:Cast steel

Details: Cast Steel Full Spring Loaded Safety Valve With Handle1.Size:DN20-4002.Pressure:1.6-10Mpa3.Material:cast steel,stainless steel4.steam,air Material...

Xiamen Chn-Meida Import & Export Co., Ltd.

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Cast Steel Metal Seat Wafer Butterfly Valve

Price Range:US $1 - 1,000 / Set

Standard or Nonstandard:Standard

Structure:Butterfly

Pressure:CLASS150CLASS300

Power:Wrm gear

Details: Products/Services: Ball Valve,Gate Valve,Reducing Valve,Fire-fighting Valves,Globe Valve,Valve Parts,Safety Valve,Check valve,Sanitary Valve

Xiamen Chn-Meida Import and Export Co., Ltd.

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Forged steel valves

Model / Specifications:11H

Details: We CHINA YOY VALVE GROUP possesses 25 years experience mainly in design, manufacture, sale on API ANSI DIN GB Standards Cast Steel and Stainless S...

China YOY Valve Group

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JIS Marine valve- Cast Iron Globe Angle valve

Model / Specifications:JIS F3060 F3060R

Standard or Nonstandard:Standard

Structure:Stop

Pressure:Low Pressure

Power:Manual

Details: Productname; JIS Marine valve- Cast Steel Storm safety valveDescription;1)F3060-Marine Cast Steel Storm safety valveNominalpressure; 5K(0.49Mpa)&a...

Qingdao V-goal marine valve manufacturing co., ltd

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China (Mainland)China (Mainland)

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Bellows Balance Safety Valve

Model / Specifications:YFA48Y

Structure:YOY

Details: We CHINA YOY VALVE GROUP possesses 25 years experience mainly in design, manufacture, sale on API ANSI DIN GB Standards Cast Steel and Stainless S...

CHINA YONGYI VALVE GROUP CO.,LTD

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Forged Steel Globe Valve (API 600)

Standard:API 600

Details:

Outong Valves Company Limited

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Cast Steel Spring Safety Relief Valve

Model / Specifications:A42.A41.

Price Range:US $75 - 2,100 / Set

Standard or Nonstandard:Standard

Structure:Angle

Pressure:150LB~2500LB

Power:automatic

Details: Products/Services: safety valve, pressure valve, relief valve, kunkle valve, pressure safety relief valve, valves, OEM, pressure safety valve,...

Tianzheng Valve Co., Ltd.

Business Type:Manufacturers

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Hot!!! slow flow cast steel valve

Standard or Nonstandard:Standard

Structure:Safety

Pressure:High Pressure

Power:Hydraulic

Details: Hot!!! slow flow cast steel valve1.standard:Q/TF-B27S.012.Nominal diameter:DN250-3000mm3.suitable medium:water gas oil4.OEM ordes are welcomed5.Th...

Tieling Tyco Valve Co., Ltd.

Business Type:Manufacturers

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China (Mainland)China (Mainland)

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Spring Load Safety Valve(TYPE A41)

Model / Specifications:A42

Price Range:US $29 - 1,874 / Set

Standard or Nonstandard:Standard

Structure:Angle

Pressure:Pressure:150lb~2500lb

Power:Automatic

Details: Products/Services: safety valve, pressure valve, relief valve, kunkle valve, pressure safety relief valve, valves, OEM, pressure safety valve,...

Zhejiang Tianzheng Valve Co., Ltd.

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AH42F Pilot Safety Valve

Model / Specifications:AH42F

Standard or Nonstandard:Standard

Structure:Safety

Pressure:Medium Pressure

Power:Manual

Details: Detailed Product Description Spring loaded Safety Valve DN 20 x 32 ~ DN 150 X 250 Pressure: PN16~ PN 40 Material: Cast steel, A216 WCB, SS304. SS3...

Shanghai Autotight Valve & Fitting Co.,ltd

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BH298-1 Kitchen Appliance Gas Hob

Model / Specifications:BH298-1

Brand Name:baihe

Details: Home/Kitchen Appliance Gas Stove/Gas Hob/Gas Cooker-304 stainless steel cook - top-Enameled steel pan support-Enameled Steel/Cast iron pan support...

Ningbo Baihe Gas Stoves Co., Ltd.

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Valves

Connection Form:Flange

Productivity:20000pcs/year

Trademark:PORO

Seal Surface:Wedge Gate Valve

Details:

Zhejiang Poro Valve Manufacturing Co., Ltd.

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full open safety valve

Model / Specifications:A42

Standard or Nonstandard:Standard

Structure:Safety

Pressure:high and low pressure

Power:automatic

Details: full open type safety valve 1.Size:1/2"~12" we can design for you as your use.2.Pressure class:150lb~2500lb3.Standard:API,JB,GB,DIN etc...

Zhejiang Haiyi Valve Co., Ltd.

Business Type:Manufacturers

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Spring safety valve

Price Range:US $1 - 15 / Piece

Standard or Nonstandard:Standard

Structure:Safety

Pressure:High Pressure

Power:Manual

Details: Spring safety valve 1.ISO certificate 2.good quality...Place of Origin: CN;SHN

Jining China Coal Industrial Equipment Corp., Ltd.

Business Type:Manufacturers

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China (Mainland)China (Mainland)

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Safety Valve

Standard or Nonstandard:Standard

Structure:Safety

Pressure:Medium Pressure

Power:Manual

Details: Safety Relief Valve Our products line includes various kinds of gate valves, globe valves, ball valves, check valves, cock valves, butterfly valve...

Shanghai KangQuan Valve Co. ,Ltd

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Duplex Pressure Safety Valve

Model / Specifications:ONO-A081515

Standard or Nonstandard:Standard

Structure:Safety

Pressure:High Pressure

Power:AUTOMATIC

Details: ANSI duplex safety valveStructuer features:1,As foundy goods have been precisely,it has tight structure,gracefl appearence,smooth and cleaning sur...

Wenzhou ONO Valve Co., Ltd.

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A42Y spring loaded Safety Valve

Model / Specifications:A42Y

Standard or Nonstandard:Standard

Structure:Safety

Pressure:PN16-PN100

Power:Medium operated

Details: Spring Loaded Safety Valve DN 20 x 32 ~ DN 150 X 250 Pressure: PN16~ PN 40 Material : Cast steel , A216 WCB , SS304 . SS316

Zhejiang Zhenfeng Import And Export Trade Co., Ltd.

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double port high lift safety valve

Material:cast steel Standard flanges: DIN ANSI JIS JB79

Media:watergasoilsteametc

Port Size:DN15-450

Details: Double Port High Lift Safety Valves We are renowned manufacturers of well designed and highly efficient Double Port Safety Valves. Demanded ...

China Yongjia Goole Valve Co.,Ltd

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cast steel pipe

Model / Specifications:TLL

Standard or Nonstandard:

Structure:Safety

Pressure:Medium Pressure

Power:Manual

Details: cast steel pipe we can offer valve according to your requirement1.OEM service available 2.Materials: stainless steel,cast iron,pig iron,carbon ste...

Qingdao Tianluli Industrial Co., Ltd.

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marine press adjust valve

Model / Specifications:D71X--10/16Z/Q/C

Standard or Nonstandard:Standard

Structure:Safety

Pressure:Medium Pressure

Power:Manual

Details: marine press adjust valve 1. valve body : cast iron/ductile iron/carbon steel/stainless steel/bronze 2. valve disc : carbon steel/ductile iron /b...

Taizhou Yisheng Trading Co., Ltd.

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  • JIS Marine valve- Cast Iron Globe Angle valve Productname; JIS Marine valve- Cast Steel Storm safety valveDescription;1)F3060-Marine Cast Steel Storm safety valveNominalpressure; 5K(0.49Mpa)&10K(0.98Mpa)DN50, 65,80, 100, 125, 150, 200 Pro...
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Product Summary




A safety valve is a valve mechanism for the automatic release of a substance from a boiler, pressure vessel, or other system when the pressure or temperature exceeds preset limits. Cast steel safety valve is made in cast steel.
It is part of a bigger set named pressure safety valves (PSV) or pressure relief valves (PRV). The other parts of the set are named relief valves, safety relief valves, pilot-operated relief valves, low pressure safety valves, vacuum pressure safety valves.

Safety valves were first used on steam boilers during the industrial revolution. Early boilers without them were prone to accidental explosion.

Vacuum safety valves (or combined pressure / vacuum safety valves) are used to prevent a tank to collapse when emptying it or when cold rinse water is used after hot CIP or SIP. The calculation method is not defined in any norm when sizing a vacuum safety valve, particularly in the hot CIP / cold water scenario, but some manufacturers have developed simulations to do so.

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