Pressure Switches for Gas and Air

QPH and QPL pressure switches are used for gas and air pressure supervision on industrial and commercial burner applications.
The QPL31 series pressure switches break the electrical circuit when the pressure
drops below the adjusted value.
The QPH31 series pressure switches break the electrical circuit when the pressure
increases above the adjusted value.

• UL listed for USA and Canada, FM approved, ISO 9001 certified; European approved versions available.
• Adjustable pressure range from 1 to 112 inches water column (WC).
• Automatic and manual reset models.
• Ventless installation.
• Surge protected up to 15 psi.

Available Part Numbers:

AutomaticReset

QPL31.050A00– Automatic Reset, Low Execution,1 – 20″WC (2.5 – 50mbar)
QPL31.075A00– Automatic Reset, Low Execution,5 – 30″WC (12.5 – 75 mbar)
QPL31.280A00– Automatic Reset, Low Execution,28 – 112″WC (70 – 280 mbar)

QPH31.010A00– Automatic Reset, High Execution, 0.8 – 4″ WC (2 – 10mbar)
QPH31.050A00– Automatic Reset, High Execution,2 – 20″WC (5 – 50mbar)
QPH31.090A00– Automatic Reset, High Execution,5 – 35″WC (12.5 – 87 mbar)
QPH31.280A00– Automatic Reset, High Execution,28 – 112″WC (70 – 280 mbar)

Manual Reset

QPL31.050M00– Manual Reset, Low Execution,1 – 20″WC (2.5 – 50mbar)
QPL31.140M00– Manual Reset, Low Execution,7 – 55″WC (17.5 – 137 mbar)

QPH31.050M00– Manual Reset, High Execution,2 – 20″WC (5 – 50mbar)
QPH31.150M00– Manual Reset, High Execution,10 – 60″WC (25 – 150 mbar)

Resources

• QP Series Pressure Switch Technical Literature