new hvac pressure switch

natural gas pressure switch

Product description

FN31 switches offer pressure, vacuum and differential models capable of sensing very low setpoints, and switching current up to 5A resistive, 2.5A inductive. Designed for use in the HVAC industry, where reliable air proving is critical to both performance and customer safety, the FN31 is a favorite with leading manufacturers of gas-fired warm air furnaces and water heaters. 
Smaller and lighter than any other HVAC pressure switch, the FN31 is built for the same temperature range and operating life as conventional switches made of stamped steel.
The FN31 will perform equally well in other applications which demand low OEM unit cost, robust design, setpoint accuracy, and high reliability.
The FN31 features a unique integral snap switch, with positive snap action and self-wiping silver contacts for ultra-reliable switching. The molded silicone diaphragm converts very low pressure or vacuum into movement of an actuator disk, which operates the silver alloy contacts.

Product specifications

Model

FN31

Medium

Air , products of combustion, L.P. or natural gas

Operating Pressure Range

0.15" W.C. to 34" W.C.

Proof Pressure

100" W.C. (3.6PSI)

Operating Temperature

-40° C to 85° C

Contact Arrangement

SPST or SPDT

Electric Rating

Resistance: Initial: <50 milliohms

Current: 100mA minimum, 5A resistive maximum

(fine silver alloy contacts);

15mA minimum, 0.5A resistive maximum

(gold-platinum-silver alloy contacts);

Terminals

0.032" x 0.250" copper alloy

Connection

Inlet 0.25" for tube connection

Agency Approval

UL353, CE( EN1854: 2006, 13611: 2000)

Our service

1. Delivery in time,delivery time is 7 days for sample and 15 working days for bulk order;
2. Strong production capacity and strict quality control system;
3. Your inquiry and problems related to our products or prices will be replied in 24 hours;
4. Well-trained and experienced staffs to answer all your inquires;
5. After-sale tracking service for all of our clients;
6. OEM is available; small quantities, mixed bulk orders are also welcome;
7. Payment: L/C, D/A, D/P, T/T, Paypal , Western Union, MoneyGram;
8. Delivery way: UPS, DHL, TNT, FEDEX, EMS, CHINA POST.

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