I can’t understand some of the pipe fittings in the PID diagram
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What do fittings 1, 2, 3, and 4 at the outlet of the PAM metering pump in this diagram represent respectively?
I’ll handle it myself; 3 is the safety valve, 4 is the float flow meter. What are 1 and 2?
Most general metering pumps are diaphragm pumps; their flow characteristic is intermittent, and their outlet pressure is not stable. Component 1 is actually a device that maintains a stable pressure to balance the flow. https://attach01.hcbbs.com/forum/201305/10/210148o4ckm9ko994kqkm9.jpg
This post was last edited by . Y edited it on 2019-11-8 09:22; 1 is the damper ； 2 is the backpressure valve ； 3 is the safety valve ； 4 is the flow meter; these items are considered standard accessories for metering pumps and are usually included.
1 is the damper； 2 is the backpressure valve ； 3 is the safety valve ； 4 is the flow meter
I only know that 1 is the damper and 3 is the safety valve!