Balanced Bellows Safety Valve is often used for the pipelines with toxic or corrosive medium.It's often supplied with closed bonnet with or without lever. We Goole can also offer Jacketed Bellow Type Balanced Safety Valve.
Balanced Bellows Safety valve should be used in the following condition:
1. When a double tightness barrier is required by the process fluid in the secondary pressure zone of the safety relief valve.
2. When the valve is subjected to a back pressure of between 10% and 50% of the set pressure.
3. When a conventional safety relief valve discharges against a back pressure, the opening pressure is the set pressure with atmospheric back pressure augmented by the actual superimposed back pressure just before the valve opens.
If the back pressure is variable, then the opening pressure of a conventional valve will also be variable.
To solve this problem, it is highly recommended to use a balanced bellows safety relief valve. The effective area of the bellows is substantially the same as the seating area of the disc on the nozzle and the bellows is vented to atmosphere through a hole drilled into the bonnet wall. The opening pressure of the safety relief valve is then independent of the back pressure.
WALKSON, as a professional safety valve parts manufacturer, supplies main parts for pressure safety valve, consisting of Valve Body, Disc, Stem and Valve Seat. Those pressure relief valve components can be made either from safety valve casting or forgings. Available material ...
G114/G115 Series China Bellows Control Valve The bellows control valve is a pressure-balanced control valve with compact body structure, S streamlined fluid passage, low-pressure drop loss, large flow rate and wide adjustable range. Bellows control valve due to the ...
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Balancing valve working principle is about how balance valve works. Balance valve is a dynamic and static balancing valve under hydraulic conditions, such as static balance valve, dynamic balance valve. Valve body material: cast iron, cast steel .work pressure is 0.6-4.0MPA. ...
Description: Kelly Valveis an effective manually operated ball type valve for the drill stem. It located within the drill string that allow for free-passage of drilling fluid without pressure loss and are specifically designed for effective control of blow outs and/or mud loss ...
Balancing valve working principle is about how balance valve works. Balance valve is a dynamic and static balancing valve under hydraulic conditions, such as static balance valve, dynamic balance valve. Valve body material: cast iron, cast steel .work pressure is 0.6-4.0MPA. ...
G114/G115 Series China Bellows Control Valve The bellows control valve is a pressure-balanced control valve with compact body structure, S streamlined fluid passage, low-pressure drop loss, large flow rate and wide adjustable range. Bellows control valve due to the ...
WALKSON, as a professional safety valve casting manufacturer, supplies main parts for pressure safety valve, consisting of Valve Body, Disc, Stem and Valve Seat. Those pressure relief valve components can be made either from safety valve castings or forgings. Available material ...
Festures of manual central heating balancing valve Straight flow structure, low fluid resistance; Handwheel display the number of opening cycles for easy debugging; Valve inlet and outlet have self - sealing test port; Valve disc self-balancing design, open and close is not ...