Pressure safety valve is a kind of safety protection valve, its opening and closing parts under the action of external force in a normally closed state, when the equipment or pipeline medium pressure rises, exceeds the specified value when the automatic opening, through the system to discharge the medium to prevent the pipeline or equipment medium pressure exceeds the specified value.
Size: 1 1/2" F 2"
Pressure:600LB
Material:Stainless steel CF8M
Pressure Safety Valve
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Precautions during installation
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1. The safety valve should be installed vertically and at the gas phase interface of the container or pipeline.
2. The outlet of the safety valve should have no resistance to avoid back pressure.
3. No valve shall be installed between the pressure-bearing equipment and the safety valve.
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Applications
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Provided as safety device for protection against excessive pressure in pressure vessels
Approved for gases and fluids.
Working temperatures: -60°C up to +300°C for stainless steel material, -29°C up to 300°C for cast steel material.
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Use
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Stainless Steel Pressure Safety Valve are used for the equipment and pipelines with such media as air, petroleum gas and liquids at a working temperature less than 300°C.
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Main property specification
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Mormal Pressure | PN | 150 | 300 | 600 | 900 | 150 |
Body strength | Ps(Mpa) | 3.0 | 7.5 | 15 | 22.5 | 38 |
Set pressure | Pk(Mpa) | 0.1-2 | 1.6-5 | 3.2-10 | 8-25 | 10-25 |
Seal pressure | Pm(Mpa) | 90%Pk | ||||
Reseation pressure | Ph(Mpa) | ≥90%Pk | ||||
Relieving Pressure | Pp(Mpa) | ≤1.1Pk | ||||
Lift height | H(mm) | ≥1/4 d0 | ||||
Appropriatetemp. | C (WCB) P, R (SS304, SS316) | ≤300℃ ≤200℃ | ||||
Appropriate Medium | Air, Oil, Steam, Water, Corrosive medium |
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Materials for main parts
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NO | Name of part | Materials A42H-C | Materials A42Y-P | Materials A42Y-R |
1 | Body | WCB | CF8 | CF8M |
2 | Nozzle | 2Cr13/ 304 | CF8 | CF8M |
3 | Adjusting Ring | 2Cr13/ 304 | 304 | 316 |
4 | Disc | 2Cr13/ 304 | 304 | 316 |
5 | Guide sleeve | 2Cr13/ 304 | 304 | 316 |
6 | Bonnet | WCB | CF8 | CF8M |
7 | Spring | ASTM 6150 | ASTM 6150 coated teflon | ASTM 6150 coated teflon |
8 | Stem | 2Cr13 | 304 | 316 |
9 | Adjusting bolt | 45 | 2Cr13 | 2Cr13 |
10 | Cap | A126 | CF8 | CF8M |
11 | Bellows | 304 | 316 | 316 |
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