Description
V8944B1027 Diaphragm Gas Valve
Two-Stage Pressure Regulating, Slow Opening, 1-1/4" NPT, Natural Gas, 24 Vac, 1600 CFH
The V8944B1027 is a two-stage, slow-opening diaphragm gas valve designed for use in commercial heating applications requiring precise dual-stage control. It is part of the V4944/V8944B,C,L,N series — a reliable line of solenoid-operated gas valves that combine pressure regulation and safety shutoff in one rugged assembly.
Key Features
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Two-stage operation offers smooth light-off and optimized flame control
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Slow-opening design (3–25 sec) for gradual pressure ramp-up
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Factory-preset regulator settings: 3.5" W.C. high fire, 0.8" W.C. low fire
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Direct replacement for Honeywell V4844/V8844 series valves
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Suitable for natural gas applications
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Failsafe shutoff: valve closes on power loss
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Die-cast aluminum construction with straight-through flow design
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Includes 1/8" pilot tapping and dual bleed tappings (5/16" UNF)
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Pre-wired with three 30" leadwires and 1/4" spade terminals
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Designed for horizontal upright mounting
Technical Specifications
| Specification | Value |
|---|---|
| Valve Type | Two Stage, Slow Opening |
| Pipe Size | 1-1/4" NPT |
| Voltage | 24 Vac |
| Fuel Type | Natural Gas |
| Inlet Pressure (Max) | 1/2 psi |
| Capacity | 480 – 1600 CFH |
| High Fire Setpoint | 3" – 4.5" W.C. (Factory: 3.5") |
| Low Fire Setpoint | 0.8" – 2" W.C. (Factory: 0.8") |
| Valve Opening Time | 3 – 25 seconds |
| Valve Closing Time | ≤ 2 seconds |
| Pilot Tapping | 1/8" NPT |
| Bleed Tappings | (2) 5/16"-24 UNF |
| Body Material | Aluminum |
| Mounting Orientation | Horizontal, Upright |
| Operating Temp Range | -40°F to 150°F |
| Termination | 1/4" Spade Terminals, (3) 30" Leads |
Series Information
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Natural Gas Models: V4944B, V8944B, V4944N, V8944N
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LP Gas Models: V4944C, V8944C, V4944L, V8944L
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Used with: Dual-stage 24 Vac thermostats or controllers (V8944), or line-voltage dual-stage controllers (V4944)
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Direct replacement for V4844 and V8844 valve models
Common Applications
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Commercial boilers and unit heaters
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Duct furnaces and rooftop heating units
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Make-up air systems
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Systems needing staged gas flow with reliable safety shutoff
