need to specify valves for up to 1500 psi
need to specify valves for up to 1500 psi
(OP)
Hi all,
Most of my life I dealt with municipal side with pressures up 50 200-300 psi, now I have a task to specify valves for the pump/piping system (water) for the pressures in excess of 1,300 psi. Can you please point me to right direction rgarding the following issues:
1.Isolation valves (gate valves) Manufacturer, specifications, tye of construction, and also at that pressure and flow of up to 700 gpm do we need an electric or hydraulic actuator or the operator could still be able to operate with the handwheel.
2. Check valve (I assume gate valves and check valves should be class #600). We have VFD on the pumps so I think a simple swing check should work. Any suggestions?
3. Air/Relief and combination Air Vaccum valves for the pipeline. Manufacture? Type?
4. Pressure relief valve to provide relief in case of overpressuring the line due to power outage, or similar.
Thank you for your input
Most of my life I dealt with municipal side with pressures up 50 200-300 psi, now I have a task to specify valves for the pump/piping system (water) for the pressures in excess of 1,300 psi. Can you please point me to right direction rgarding the following issues:
1.Isolation valves (gate valves) Manufacturer, specifications, tye of construction, and also at that pressure and flow of up to 700 gpm do we need an electric or hydraulic actuator or the operator could still be able to operate with the handwheel.
2. Check valve (I assume gate valves and check valves should be class #600). We have VFD on the pumps so I think a simple swing check should work. Any suggestions?
3. Air/Relief and combination Air Vaccum valves for the pipeline. Manufacture? Type?
4. Pressure relief valve to provide relief in case of overpressuring the line due to power outage, or similar.
Thank you for your input





RE: need to specify valves for up to 1500 psi
RE: need to specify valves for up to 1500 psi
I got that covered with gate valve, I am working with Crane, Velan, etc.. but want your input regarding an actuator. I am not quite sure about actuators though. Not getting straight answer from the reps on the torque and what would it take to manually operate at 1,500 psi 700 gpm.
RE: need to specify valves for up to 1500 psi
Patricia Lougheed
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RE: need to specify valves for up to 1500 psi
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RE: need to specify valves for up to 1500 psi
The "operate the valve from where" is important: Can you stand on the floor and get to it? Get a truck and have to drive to the end of the property and climb a pipe stand? Use a chain and rack to operate a valve up high - but not need an electric actuator at all? Have the machine operator reach over and turn it?
Valve actuators are expensive (add in controller, actuator itself, feedback trips and wires, the remote switching station and the indicators, the control room wiring and lights. It adds up to more than just the mechanism.)
But - what is the cost if the valve can't get operated quickly? What is the risk of leaving it open for 10 minutes until you can get somebody to go close it? How much are you paying your 3-shift operators plus a spare?