-
- Trade Leads
- Trade Services
- B2B Directories
- Trade Connections
- Misc
- Contact Us
A free import export trade leads B2B marketplace since 1996 for manufacturers, suppliers, exporters, importers, buyers, sellers, wholesalers, freight forwarders, shippers, trade shows, exhibits, and export management.
Hello visitor from
USA - 159 visiting from 141 USA 
11 Canada 
3 Belgium 
2 UK 
1 Germany 
1 Singapore
Hello visitor from
USA - 159 visiting from 141 USA 11 Canada 3 Belgium 2 UK 1 Germany 1 Singapore
A46y Pilot Operated Safety Valve Posv , Wcb, Cf8, Cf8m
Posted at: Offers to Sell and Export | Posted on: Thursday 12 January 2017 5:55 am | Poster last visit: Tuesday 8 May 2018 | Targeted Countries: China
Product Category: Main
» Distribution and Conditioning Systems and Equipment and Components
» Fluid and gas distribution
» Valves
» Safety valves
» A46y Pilot Operated Safety Valve Posv , Wcb, Cf8, Cf8m
Product Description:
China Pilot Operated Safety Valve Manufacturer Shinjo Supplies A46Y Pilot Operated Safety Valve (POSV),
WCB, CF8, CF8M, More Options for Control.Advantages:
Smaller package on the larger pipe sizes.
More options for control.
Seals more tightly as the system pressure approaches but does not reach set pressure.
Control pilot can be mounted remotely.
Some designs allow for changes in orifice size within the main valve.
Codes and Standards:
United States:
ASME (American Society of Mechanical Engineers) Boiler & Pressure Vessel Code, Section I
ASME (American Society of Mechanical Engineers) Boiler & Pressure Vessel Code, Section VIII, Division 1
API (American Petroleum Institute) Recommended Practice 520 and API Standard 526, API Standard 2000 (low pressure - Storage tank
European Union:
European standard steam boiler safety valveISO 4126 (harmonized with European Union directives)
EN 764-7 (former CEN standard, harmonized with European Union directives, replaced with EN ISO 4126-1)
AD Merkblatt (German)
PED 97/23/EC (Pressure Equipment Directive - European Union)
China:
JB/T308-2004 <Valves Code>
GB/T12241-2005 <Safety Valves’ Design, Manufacture and Test>
GB/T12243-2005 <Safety Valves’ Design, Manufacture and Test>
Design Features:
The pressure is supplied from the upstream side (the system being protected) to the dome often by a small pitot tube. The downstream side is the pipe or open air where the PORV directs its exhaust. The outlet pipe is typically larger than the inlet. 2”x3”, 3”x4”, 4”x6”, 6”x8”, 8x10” are some common sizes.
The upstream pressure tries to push the piston open but it is opposed by that same pressure because the pressure is routed around to the dome above the piston. The area of the piston exposed to pressure is larger in the dome than it is on the upstream side; the result is a net sealing force. F = PA (Force = Pressure * Area)
The pressure from the pilot tube to the dome is routed through the actual control pilot valve. There are many designs but the control pilot is essentially a conventional PRV with the special job of controlling pressure to the main valve dome. When the pilot valve reaches set pressure it opens and releases the pressure from the dome. The piston is then free to open and the main valve exhausts the system fluid. The control pilot opens either to the main valve exhaust pipe or to atmosphere.
Snap Acting: At set pressure the valve snaps to full lift, it can be quite violent on large pipes with significant pressure. The pressure has to drop below the set pressure in order for the piston to reseat (see blow down in relief valve article).
Modulating: The pilot is designed to open gradually, so that less of the system fluid is lost during each relief event. The piston lifts in proportion to the over pressure. Blow down is typically short.
Company Contact:
Contact Name: Jeasin Zhang
Company Name: Shanghai Shinjo Valve Co., Ltd.
Email:
Tel: 86-21 5620 6641
Fax: 86-21 5641 2609
Street Address: No 150, Honxing
Road, Shanghai, China.
Shanghai, Shanghai 200000
China
Website: http://www.shinjovalve.com
Member name: ShanghaiShinjoValve
Country:
China
Member Since: 12 January 2017
Total Leads: 28 ShanghaiShinjoValve Import Export Business Leads
Business focus: Valves, Ball Valves, Check Valves, Gate Valves
Chat:
Verify: Safe Import Export Tips
WCB, CF8, CF8M, More Options for Control.Advantages:
Smaller package on the larger pipe sizes.
More options for control.
Seals more tightly as the system pressure approaches but does not reach set pressure.
Control pilot can be mounted remotely.
Some designs allow for changes in orifice size within the main valve.
Codes and Standards:
United States:
ASME (American Society of Mechanical Engineers) Boiler & Pressure Vessel Code, Section I
ASME (American Society of Mechanical Engineers) Boiler & Pressure Vessel Code, Section VIII, Division 1
API (American Petroleum Institute) Recommended Practice 520 and API Standard 526, API Standard 2000 (low pressure - Storage tank
European Union:
European standard steam boiler safety valveISO 4126 (harmonized with European Union directives)
EN 764-7 (former CEN standard, harmonized with European Union directives, replaced with EN ISO 4126-1)
AD Merkblatt (German)
PED 97/23/EC (Pressure Equipment Directive - European Union)
China:
JB/T308-2004 <Valves Code>
GB/T12241-2005 <Safety Valves’ Design, Manufacture and Test>
GB/T12243-2005 <Safety Valves’ Design, Manufacture and Test>
Design Features:
The pressure is supplied from the upstream side (the system being protected) to the dome often by a small pitot tube. The downstream side is the pipe or open air where the PORV directs its exhaust. The outlet pipe is typically larger than the inlet. 2”x3”, 3”x4”, 4”x6”, 6”x8”, 8x10” are some common sizes.
The upstream pressure tries to push the piston open but it is opposed by that same pressure because the pressure is routed around to the dome above the piston. The area of the piston exposed to pressure is larger in the dome than it is on the upstream side; the result is a net sealing force. F = PA (Force = Pressure * Area)
The pressure from the pilot tube to the dome is routed through the actual control pilot valve. There are many designs but the control pilot is essentially a conventional PRV with the special job of controlling pressure to the main valve dome. When the pilot valve reaches set pressure it opens and releases the pressure from the dome. The piston is then free to open and the main valve exhausts the system fluid. The control pilot opens either to the main valve exhaust pipe or to atmosphere.
Snap Acting: At set pressure the valve snaps to full lift, it can be quite violent on large pipes with significant pressure. The pressure has to drop below the set pressure in order for the piston to reseat (see blow down in relief valve article).
Modulating: The pilot is designed to open gradually, so that less of the system fluid is lost during each relief event. The piston lifts in proportion to the over pressure. Blow down is typically short.
Company Contact:
Contact Name: Jeasin Zhang
Company Name: Shanghai Shinjo Valve Co., Ltd.
Email:
Tel: 86-21 5620 6641
Fax: 86-21 5641 2609
Street Address: No 150, Honxing
Road, Shanghai, China.
Shanghai, Shanghai 200000
China
Website: http://www.shinjovalve.com
Member name: ShanghaiShinjoValve
Country:
ChinaMember Since: 12 January 2017
Total Leads: 28 ShanghaiShinjoValve Import Export Business Leads
Business focus: Valves, Ball Valves, Check Valves, Gate Valves
Chat:
Verify: Safe Import Export Tips
Similar Suppliers And Manufacturers Import Export Trade Leads
Solenoid Valve For Governing Valve Dsv-001b For Bangladesh Power Station - By DongfangYoyik - On Friday 29 July 2022 1:09 am: valve for governing valve dsv-001b for bangladesh power station
is a popular product from yoyik dongfang yoyik engineering co ltd is a professiona....
Rubber Track Remote Operated Slope Mower Ssc800-150 - By ShandongSupershineRobot - On Friday 14 October 2022 6:22 am: rubber track remote operated slope mower ssc800-150
supershine robot is a professional intelligent machinery manufacturer located in weifang city shandong province china remote control lawn mowers ....
Proportional Valve Overflow Valve - By huadejishu - On Thursday 4 August 2022 1:16 am: valve dbee6 zdbee6
product attributes
brand huade hydraulic
model dbee6
certificate iso9001-2008
origin china
custom properties
the proport....
Safety Industrial Belt - By chungting - On Wednesday 26 October 2022 7:17 am: safety belt manufacturer focusing on design development and production such as working at heights harness and safety belt for height work
chung ti....
Road Safety Guardrails - By highwayguardrail - On Tuesday 4 April 2023 7:55 am: safety guardrail barrier system - beam type guard rails post delineators tiling kerbs amp amp concrete barriers
road safety guardrail barriers ....
Mobile Fence Safety Barrier - By HanTaymobilefencing - On Wednesday 16 March 2022 1:42 am: mobile fence safety barrier
we supply welded type mesh fences for temporary mobile security fencing uses mesh panels can be flat welded and dimensional curvy panels
2m high ....
Construction Site Safety Fence - By HanTaymobilefencing - On Wednesday 16 March 2022 1:39 am: safety or security crowd control theft deterrent or equipment storage it most commonly used as security fencing for building and construction site....
Led Safety Interference Suppression Capacitor - By jecelectroniccomponents - On Thursday 8 December 2022 9:35 am: led safety interference suppression capacitor
features
amp #9678 it is made of non-inductive winding of metallized polypropylene film
amp #9678 ul94-v0 flame retardant plastic case flame r.... Import Export Startup Stories
Share Your Story & Get Listed at StartImportExport.com- Kimsion Plastic and Metal Manufacturing Limited: Jason Yeung Of Kimsion Plastic and Metal Manufacturing Limited From Hong Kong
- Winfy Industrial Ltd: Andy Of Winfys Industrial Limited From China A Led Power Flares Factory
- Cixi Tian Hao Dispensing Equipment Co Ltd: Cayman Of Cixi Tian Hao Dispensing Equipment, A Manufacturer And Exporter Of Dispensers From China
Safety valves Classification Navigation
Main - Distribution and Conditioning Systems and Equipment and Components - Fluid and gas distribution - Valves - Safety valves [14]
TradersCity.com shall not be held liable for any user posted/submitted content including but not limited to trade leads, profiles, images, and any other data. TradersCity.com does not and did not verify any of users posted/submitted data nor is implicitly or explicitly recommending these business offers. TradersCity does not verify truthfulness, accuracy, completeness, nor legality of any businesses, services, and leads posted here. TradersCity does not represent Sellers or Buyers in any transaction between users of the website and is unable to make any opinion in regard to their performance in any transaction. TradersCity neither guarantees nor undertakes in any dispute between sellers and buyers. Protect your business from fraud by trading safely