Dungs 267084 Dual Modular Valve (DMV-D(LE)/624; 634) with Proof of Closure combines all the features of Dual Modular Valve DMV/604 plus overtravel and a proof of closure switch which is factory mounted and set.DMV/624;634 is recommended for industrial and commercial heating applications that require two safety shutoff valves in series where the application requires overtravel and a proof of closure switch(s) and NEMA Type 4 enclosure. The DMV-D(LE)/624;634 is suitable for natural gas, propane, butane, air and other inert gases.Aluminum body; Inlet, intermediate and outlet side taps (G1/8 ISO 228); Inlet gas strainer installed in the housing upstream valves (23 mesh screen); DMV-D - V1 fast opening & closing (<1 s), V2 fast opening & closing (<1 s); DMV-DLE - V1 fast opening & closing (<1s); V2 slow opening 20s MAX at 70F & fast closing (<1 s); V2 on both models feature a manually adjustable flow rate (<10-100%); 100% duty cycle. Includes 1 POC switch. Flanges must be ordered and priced separately. Code requirements vary. FM requires visual indication on 1" and larger safety valves. The visual indicator, (VI) 266949 meets this requirement. The visual indicator must be ordered separately for valve 1. Factory mounted and calibrated proof of closure switch: SPDT 10 A resistive, 8 FLA, 48 LRA @ 120 Vac; NEMA type 4; - 40 Deg F to + 150 Deg F ( - 40 Deg C to + 65 Deg C); Switch incorporates visual indication of valve (opened & closed).
Dungs DMV 70x/624 Series 