Mercoid DA-31-3-5 Series DA Bourbon Tube Pressure Switch (Brand New!)

Description

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Mercoid DA-31-3-5 Series DA Bourbon Tube Pressure Switch
(This item is brand new in the box!)
Mercoid Controls came into existence when a young independent inventor with an innovative switch design needed a manufacturer for his idea. He found an interested instrumentation manufacturer, The Federal Gauge Company of Chicago, Illinois, that had extensive Bourdon tube experience dating back to 1917. Mercoid’s first control was a Bourdon tube pressure switch that was released in 1921. The switch with its ingenious design became an instant success and has lasted over eighty years through its evolution into the present D series pressure Control. The D Series is still the premier adjustable pressure switch on the market today.
The company was at the forefront of controls technology during the foundation of the heating and refrigeration industries, which drove expansions into temperature and level controls. Mercoid innovated mercury switches, which is where the namesake arrived. Today Mercoid is much more than mercury switches with almost all products being available with snap switches. Mercoid has continued the innovative spirit as it has expanded into many new products including level transmitters and digital pump controllers.
Specs:
Mercoid DA-31-153-5 pressure switch, brass Bourdon tube, range 2-60 psig, 3 psig min. deadband. Wetted Materials: Brass, 403 SS, or 316 SS. Temperature Limit: 180°F (82°C). Pressure Limit: Maximum pressure of the operating range. Enclosure Rating: General purpose, weatherproof or explosion-proof. Repeatability: ±1% of full operating range, ±1.5% on DS-7300 models. Switch Type: SPST mercury switch, SPDT mercury switch, SPDT snap switch, or SPDT hermetically sealed snap switch. Other circuit types available. Electrical Rating: See Catalog page. Electrical Connections: Screw terminal. Conduit Connection: General purpose: 1/2" hole for conduit hub. Weatherproof: 1/2" conduit hub. Explosion-proof: 3/4" female NPT. Process Connection: General purpose and weatherproof: 1/4" male NPT; 1/2" male NPT on range 15S and 16S. Explosion-proof: 1/2" male NPT and 1/4" female NPT. Mounting Orientation: Vertical. Set Point Adjustment: Thumbscrew. Weight: General purpose: 4 lb (1.8 kg). Weatherproof: 6 lb (2.7 kg). Explosion-proof: 8 lb (3.5 kg). Deadband: See Catalog page. Agency Approvals: CE, UL, CSA, FM. (Mercury switch units are not CE approved). (Consult factory for which models have what approvals.)
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