| Name：9800 Pilot Operated Pressure/Vacuum Relief Valve |
| Description： |
The 9800 Series pilot operated valves have two principal advantages over other types ofrelief valves. It is bubble tight to set pressure. And, the full flow is attained at no more than 10% over-pressure. These haracteristics permit an operating pressure nearer to the maximum allowable working pressure of the tank. High operating pressures reduce evaporation and total venting volume, thereby reducing product loss and cost of processing emissions.
Set Pressure：
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TYPE9800 |
TYPE9805 |
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0.5 ～ 103.4 |
0.5 ～ 103.4 |
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-0.2 ～ -4.3 |
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Features：
1. Sizes 2" through 12"；
2. Available in aluminum, carbon steel, stainless steel and other materials；
3. Full open at less than 10% overpressure；
4. Main valve remains tight to set pressure；
5. Soft seats seal tight to conserve product and minimize valve wear which improves reliability；
6. The flanges of inlet and outlet are ANSI B16.5 150Lb RF.(It can be required by user).
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