What does a pop-off valve do?

It vents air or fluid once line pressure reaches its setpoint, protecting downstream devices from overpressure. This one opens at 23 psi.

What size connection does it have?

It has a 1/2-inch connection. Check your existing valve's thread and size before ordering.

No. The A-400-603 is a fixed-setpoint relief valve; choose a different model if you need another pressure.

It is used as a pressure relief valve on low-pressure pneumatic control lines. Confirm compatibility with your system's medium before installing.

It fits where a 1/2-inch, 23 psi relief valve was used. Match the size, setpoint and connection type of the part you are replacing.

At Surplus Record, for $203.00, as of our latest check.

2 stores we checked sell it, including GSIstore, Surplus Record.

$203.00at Surplus RecordChecked Nov 12

Compared across 2 stores. Prices are checked against each store and labelled with when.

It checks today's price at every store, compares the alternatives and answers in about a minute.