Buy ASTM A351 CF8 Pressure Relief and Temperature Safety Valve at discounted price
Relief and safety Valves are used in high pressure systems to control the pressure and keep balance of the system. The different between safety valves and relief valves is that the safety valves fully open or close under a certain pressure while the relief valves can open in proportion to the pressure in front of them. The safety and pressure relief valves are used automatically. They both operate under similar conditions. When the pressure builds up in a system, it has to be managed by releasing the material to flow through. These valves have a threshold pressure at which they open. The consolidated safety and safety relief valves comprise of a bonnet vent and bellow with springs.
Stainless Steel Safety Valve
316 Boiler Pressure Relief Valves
ASTM A351 CF8 Temperature Safety Valve
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The springs are set up for the threshold pressure and when the pressure exceeds the threshold, the spring is pushed into the bonnet vent and the bellow opens the valve. The Safety Relief Valves can be open and shut valves. They either open or shut off at any given pressure. This is mostly for the safety of an application not to explode under high pressure. The Pressure Relief Valve on the other hand releases the material after the threshold pressure, but not fully. If the pressure is slightly higher the threshold, then the valve opens slightly. If the pressure is very high above the threshold, it opens wider. It also functions in the same manner when the pressure drops down. The valve closes in proportion to the pressure. The safety valve shuts down at once only when the pressure is below the threshold.
Table of Content
| Size | 50NB — 600NB |
|---|---|
| Pressure | 150PS1 |
| Temperature | 0 Deg C - 1200 Deg C. |
| Body , Chest | Solid One piece casting of Cast Iron Fg 260, Cast Steel Gr WCB ,CF8,CF8M. |
| Seat | Integral to Body, Soft, Optional. |
| Gate | AISI SS 304,316,316L,317,317L |
| Screw Spindle | AISI SS 410,304,316. |
| Nut | Brass |
| Yoke | Plate type of MS . |
| Gland Follower | Cast Iron , Cast steel , Ductile Iron ,CF8,CF8M. |
| Hand Wheel | Cast Iron , Cast steel , Ductile Iron |
| Gland Packing | PTFE , PTFE Impregnated |
| Ends | Lugged |
| Port | STANDARD [Round], Optional V Port, Diamond Port,. |
| Set Pressure Ranges | 20 to 2,000 psig (1.38 to 137.9 barg) |
| Temperature Range | -450 to 550°F (-268 to 288°C) |
- Direct Spring Loaded
- Soft Seat Design
- External Blowdown Control
- Full Lift at Set Pressure
| Minimum Ambient Temperature | -20° °F |
Ready Stock of ASTM A351 CF8M Spring Loaded Safety Valve in wide range of Sizes, Stainless Steel Air Compressor Pressure Relief Valve Manufacturers In India
| Maximum Ambient Temperature | 200° °F |
| Minimum Operating Temperature | -40° °F |
| Maximum Operating Temperature | 300 °F |
A351 CF8 consolidated safety and safety relief valves
Stainless Steel 304 Boiler Safety Valve
ASTM A351 CF8M Spring Loaded Safety Valve
Stainless Steel Air Compressor Pressure Relief Valve
Cast Steel Temperature Safety Valve
Brass Relief and safety Valves
| Pressure Relief Setting | 10.3 to 27.6 barg 150 to 400 psig |
| Maximum Operating Pressure | 27.6 barg 400 psig |
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| Air Flow Rate | 130 to 1776 SCFM |
- Low lift safety valve
- Full lift safety valve
- Full bore safety valve
- Conventional safety relief valve
- Balanced safety relief valve
- Pilot operated pressure relief valve
- Power-actuated safety relief valve
- Standard safety valve
- Proportional safety valve
- Diaphragm safety valve
- oil and gas
- petrochemical
- power generation using steam, air, gas or liquid
- refining and chemical processing
Relief Valves are designed to control pressure in a system While Safety Valves are used for controlling the pressure in a system they release pressure immediately in the event of an emergency or system failure
The Setpoint of relief valve is usually set at 10 Percent above working pressure limit while safety valve is usually set at 3% above working pressure limit.
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- If your system is shut down for annual maintenance then this is an ideal time to remove your Safety valves and have them inspected and recertified.
- If you are operating systems that can only be off for short periods of time, it is sensible to keep a spare valve to swap over and then the removed valve can be inspected and recertified.