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.
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Overview
V4943A/V8943A are on/off diaphragm gas valve used on boilers, unit heaters, duct furnaces, makeup air and rooftop heaters.
Features & Benefits:
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
Specifications
Environmental Conditions
- Ambient Temperature Range
- -40 to +150 deg F (-40 to +66 deg C)
Electrical Specifications
- Voltage Rating
- V4943A (120 VAC), V8943A (24 VAC)
- Power Consumption
- V4943A: 6 VA Watt
- V8943A: 8 VA Watt
Actuation, Valve & Motion Control Specifications
- Valve Type
- Single‑stage, solenoid‑operated diaphragm gas valves
- Valve Pattern
- Straight-through, non-offset
- Opening Time
- Normally closed; <6 seconds
- Closing Time
- Normally closed; ≤3 seconds
Material Specifications
- Valve Body Material
- Die-Cast Aluminum
Dimensions & Size Specifications
- Pipe Size
- 1 in, 1-1/4 in, 1-1/2 in, 2 in NPT
Installation & Mounting Specifications
- Mounting Position
- Horizontal upright
Overview
- Models
- V4943A, V8943A
Pressure Specifications
- Maximum Operating Pressure
- 0.5 psi (3.4 kPa) kilopascal
Fuel, Gas & Media Specifications
- Gas Type
- Natural Gas, LPG
Connections & Interfaces
- Electrical Connections
- 1/4 in spade terminals
- Leadwires and conduit cover included
Standards & Certifications
- Approvals
- UL Listed File MH64447, Guide YIOZ, CSA Certified Report C2030020, ANSI Z21.21 Compliance Valve leak test and allowable leakage rates, CSA Certified Report C2030020, ANSI Z21.21 Compliance Valve leak test and allowable leakage rates
Environmental Conditions
- Ambient Temperature Range
- -40 to +150 deg F (-40 to +66 deg C)
Electrical Specifications
- Voltage Rating
- V4943A (120 VAC), V8943A (24 VAC)
- Power Consumption
- V4943A: 6 VA Watt
- V8943A: 8 VA Watt
Actuation, Valve & Motion Control Specifications
- Valve Type
- Single‑stage, solenoid‑operated diaphragm gas valves
- Valve Pattern
- Straight-through, non-offset
- Opening Time
- Normally closed; <6 seconds
- Closing Time
- Normally closed; ≤3 seconds
Material Specifications
- Valve Body Material
- Die-Cast Aluminum
Dimensions & Size Specifications
- Pipe Size
- 1 in, 1-1/4 in, 1-1/2 in, 2 in NPT
Installation & Mounting Specifications
- Mounting Position
- Horizontal upright
Overview
- Models
- V4943A, V8943A
Pressure Specifications
- Maximum Operating Pressure
- 0.5 psi (3.4 kPa) kilopascal
Fuel, Gas & Media Specifications
- Gas Type
- Natural Gas, LPG
Connections & Interfaces
- Electrical Connections
- 1/4 in spade terminals
- Leadwires and conduit cover included
Standards & Certifications
- Approvals
- UL Listed File MH64447, Guide YIOZ, CSA Certified Report C2030020, ANSI Z21.21 Compliance Valve leak test and allowable leakage rates, CSA Certified Report C2030020, ANSI Z21.21 Compliance Valve leak test and allowable leakage rates
- Ambient Temperature Range : -40 to +150 deg F (-40 to +66 deg C)
- Voltage Rating : V4943A (120 VAC), V8943A (24 VAC)
- Valve Type : Single‑stage, solenoid‑operated diaphragm gas valves
- Valve Pattern : Straight-through, non-offset
- Valve Body Material : Die-Cast Aluminum
- Power Consumption : V4943A: 6 VA Watt|V8943A: 8 VA Watt
- Pipe Size : 1 in, 1-1/4 in, 1-1/2 in, 2 in NPT
- Opening Time : Normally closed; <6 seconds
- Mounting Position : Horizontal upright
- Models : V4943A, V8943A
- Maximum Operating Pressure : 0.5 psi (3.4 kPa) kilopascal
- Gas Type : Natural Gas, LPG
- Electrical Connections : 1/4 in spade terminals|Leadwires and conduit cover included
- Closing Time : Normally closed; ≤3 seconds
- Approvals : UL Listed File MH64447, Guide YIOZ, CSA Certified Report C2030020, ANSI Z21.21 Compliance Valve leak test and allowable leakage rates, CSA Certified Report C2030020, ANSI Z21.21 Compliance Valve leak test and allowable leakage rates
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