1 in. NPT 2-stage pressure regulating, slow opening 24Volt diaphragm gas valve.

V4944B,L,N/8944B,C,L,N are Two-stage Pressure Regulating Gas Valve. These valves are used on boilers, unit heaters, duct furnaces, makeup air and rooftop heaters.

Features

• Designed for replacement for V4844/V8844 Gas Valves.
• Suitable for use on atmospheric boilers, commercial water heaters, and rooftop heaters.
• V4944/V8944B,C,L,N models are solenoid-operated diaphragm valves that combine the functions of safety shutoff and pressure regulation in a single unit.
• V4944/V8944B,N are for use with natural gas.
• V4944/V8944C,L are for use with LP gas.
• Valve body of die-cast aluminum with a straight-through pattern.
• V4944 are used with line voltage, dual-stage controllers; V8944 are used with 24 Vac dual-stage thermostats or controllers.
• Valve closes on power failure; recommended for final shutoff service.

Product Specifications

Dimensions (in.)

6 9/16 in. high x 6 in. wide x 6 in. deep

Dimensions (mm)

167 mm high x 152 mm wide x 152 mm deep

Materials

Body--Aluminum

Comments

(3) 30" leadwires

Mounting

Upright (horizontal)

Frequency

60 Hz

Approvals, Underwriters Laboratories Inc.

File No. MH1639, Guide No. YIOZ (60 Hz only)

Approvals, CSA

Certificate No. 158158-1042930, Guide No. 3302-01, 81 (Z21.21, Z21.78)

Electrical Connections

1/4 in. (6 mm) spade terminals (quick connects). 30 in. (762 mm) leadwires and cover for electrical conduit connection provided.

Power Consumption

12.4 VA max

Voltage

24 Vac

Operating Temperature Range (F)

-40 F to +150 F

Operating Temperature Range (C)

-40 C to +66 C

Current Ratings

0.516 max amps at rated Vac/Hz

Body Pattern

Straight-through, non-offset

Opening Characteristics

Slow Opening 2-stage

Pressure Ratings (psi)

1/2 psi

Pressure Ratings (kPa)

3.4 kPa

Type of Fuel

Natural

Pipe Size (inch)

1 in.

Pipe Size (DN)

DN25

Bleed Tapping

Two 5/16-24 UNF

Pilot Tapping

1/8-27 NPT

Valve Opening Time

3 to 25 sec

Valve Closing Time

2 sec max

Pressure Regulator Setpoint (in. wc)

Adj. Range, Low Fire-- 0.8 in. wc to 2 in. wc; Adj. Range, High Fire-- 3 in. wc to 4.5 in. wc; Factory Setting, Low Fire-- 0.8 in. wc; Factory Setting, High Fire-- 3.5 in. wc