VR8305 Direct Ignition Dual Automatic Valve Combination Gas Control

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Combination gas control for use with hot surface/direct spark systems in 24 Vac, gas-fired appliances, with capacities from 30 to 415 cfh.


  • Controls include manual valve, two automatic operators, and pressure regulator.
  • Use with S89C,E,F and S87 series 5 and later.
  • Compact size.
  • Provide two automatic valves.
  • Solenoid-operated first automatic valve opens on thermostat call for heat; closes when call for heat ends.
  • Diaphragm-operated second automatic valve opens under control of regulator; closes if gas or power supply is interrupted.
  • Meet codes requiring dual safety shut-off.
  • All adjustments, wiring connections and pilot outlet are accessible from top of control.
  • Adjustable servo regulator effectively maintains almost constant gas output pressure under wide fluctuations in gas supply pressure.
  • ON-OFF lighting sequence.


Type: Single Stage
Body Pattern: Straight-through
Capacity @ 1 in. p.d.: 30,000 BTU/hr minimum; 270,000 BTU/hr maximum
Anticipator Setting: 0.7 A
Ignition Type: Direct Ignition
Pressure Ratings: 1/2 psi (3.5 kPa)
Pressure Tapping: 1/8 in. NPT with plug
Electrical Ratings: 24 Vac
Frequency: 60 Hz
Electrical Connections: 1/4 in. male quick-connects
Mounting: 0 to 90 degrees in any direction from the upright position of the gas control knob, including vertically.
Approvals: American Gas Association: AGA Design Certified: File No. L2025007. Canadian Gas Association: CGA Design Certified: File No. L2025007. Underwriters Laboratories, Inc. UL Component Recognized.

Dimensions & Ranges:


Product Number Type of Gas Opening Characteristics (standard, step) Inlet/Outlet Size (in.) Pressure Regulator Setting Ambient Temperature Range Includes
(F) (C)
* VR8305M3506 Natural Standard 1/2 in. x 3/4 in. 3.5 in. wc 0.87 kPa -40 F to +175 F -40 C to +79 C 393691 Natural to LP conversion kit; 390427 pipe bushing.
VR8305P2224 LP Step Opening
1/2 in. x 1/2 in.
Full Rate: 10.0 in. wc;
Step Setting: 4.0 in. wc
Full Rate: 2.49 kPa;
Step Setting: 1.0 kPa
-40 F to +175 F
-40 C to +79 C
VR8305P4279 Natural Step Opening
3/4 in. x 3/4 in.
Full Rate: 3.5 in. wc;
Step Setting: 0.9 in. wc
Full Rate: 0.87 kPa;
Step Setting: 0.22 kPa
-40 F to +175 F
-40 C to +79 C

* TRADELINE models