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The company is committed to special valves’ research, development, manufacturing and service, including self-operated safety shut-off valve, self-operated axial pressure regulating valve, Electric or pneumatic axial flow regulator, that are used in High-pressure natural gas station.
Our products have been sold the whole country, and also export to South-Asia, Africa etc. countries and areas. West-East Gas Pipeline, the second West-East Gas Pipeline, the Shanxi-Beijing Pipeline, the second Shanxi-Beijing Pipeline, the Sebei-Xining-Lanzhou Pipeline, the Sebei-Xining-Lanzhou Double Track Projects, the Sichuan to East Pipeline, Zhongxian-Wuhan Pipeline, Fujian LNG, Shanghai LNG and many other National large key projects; City Gas Distribution Products spread national more than 30 provinces and cities. At the same time, crude oil/ petroleum trade metering products have successfully been put into operation in Kazakhstan, Sudan and other countries; Natural gas equipment also have been exported to Libya, Uzbekistan, Kenya, Myanmar and other overseas markets.
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PRODUCTS
Features※Low pressure drop due to in-line flow design ※Replace internal parts without dismantling the valve from the line ※Equipped with pressure compensating valve ※Emergency manual release local position indicator standard ※Electric release and electric remote indication of valve position available ※High response accuracy and short response time ※Max. flow rate should not exceed 80 m/sec, noise <80dB ※TUV SIL 3 certificate according to SIL-norm IEC 61508 IEC 61511
Technical Data
Operating principle
Safety shut-off valve is controlled by pilot . Overpressure or underpressure release feature is when monitored downstream operating pressure exceeds set-point range, the pressure signal fed back to the pilot (pilot valve), the pilot piston moving up or moving down, so that the trolley trip, hammer down the impact of the firing pin and firing pin moves down makes disengage the hook and flap, flap valve is closed down, thereby cutting off gas to the downstream pipeline, protect downstream equipment and pipeline safety.
Valve Design
Command Design
Dimensions
SSV - A400 DN25 – DN150
SSV - A400 DN250 - DN400
The sampling point pressure piping connecting dimensions
Pressure sampling point mounting position
As shown in Figure 1 and 2, the safety shut-off valve (SSV) pressure sampling point is 5-8xDN from the working valve (PCV or PV) .
Product order type selection
Shut-off valve selection  Pilot selection
Other special feature 
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BETTER FLUID CONTROL VALVES Tel：+86 22 59699701
