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Shutoff Valves

V4943/V8943 Single-stage pressure regulating valves

V4943B, N/8943B, C, N are Single-stage Pressure Regulating Valves. These valves are used on boilers, unit heaters, duct furnaces, makeup air and rooftop heaters.

Overview
V4943A/V8943A are on/off diaphragm gas valve used on boilers, unit heaters, duct furnaces, makeup air and rooftop heaters.

Features & Benefits:
  • Designed for replacement for V4843A/V8843A Gas Valves
  • Suitable for use on atmospheric boilers, commercial water heaters, and rooftop heaters
  • V8943A/V4943A models are solenoid-operated diaphragm valves for on/off flow control of natural or LP gas
  • Valve body of die-cast aluminum with a straight-through pattern
  • V4943 are used with line voltage, on/off controllers; V8943A are used with 24 Vac thermostats or controllers
  • Valve closes on power failure; recommended for final shutoff service
  • Type of Fuel: Natural; LP
  • Bleed Tapping: Internal Bleed
  • Pilot Tapping: 1/8-27 NPT
  • Body Pattern: Straight-through, non-offset
  • Opening Characteristics: Rapid Opening On-Off
  • Valve Opening Time: 6 sec max
  • Valve Closing Time: 3 sec max
  • Mounting: Upright (horizontal)
  • Materials: Body – Aluminum
  • Frequency: 60 HzElectrical Connections: 1/4 in. (6 mm) spade terminals (quick connects). 30 in. (762 mm) leadwires and cover for electrical conduit connection provided
  • Operating Temperature Range: -40°F to +150°F (-40°C to +66°C)
  • Approvals, Underwriters Laboratories Inc.: File No. MH1639, Guide No. YIOZ (60 Hz only)
  • Approvals, CSA: Certificate No. 158158-1042930, Guide No. 3371-03, 83 (Z21.21, Z21.78)
  • Pressure Ratings (psi): 1/2 psi
  • Pressure Ratings (kPa): 3.4 kPa
  • Comments: (2) 30" leadwires
  • Current Ratings: 0.055 max amps at rated Vac/Hz
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