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Main product image of Standard PowerPile Millivolt Combination Gas Valve - 3/4" NPT x 3/4" NPT
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Standard PowerPile Millivolt Combination Gas Valve - 3/4" NPT x 3/4" NPT
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VS820A1054 has been discontinued
Discontinued March 28, 2024
This product was discontinued by the manufacturer.

Licensed Contractor Required

This product must be installed by a qualified/licensed contractor and set up with properly calibrated combustion test equipment. Failure to comply with this could result in substantial property damage, severe personal injury or death.

Product Highlights

Product Highlight: Fuel Type
Natural Gas
Product Highlight: Inlet Size
3/4"
Product Highlight: Outlet Size
3/4"
Product Highlight: Capacity (BTU)
335000 BTU Capacity

Description

Note: This is the direct replacement for Slant/Fin 410-521-000

Product Overview:
  • These gas controls combine a Lite-Rite manual gas cock, safety shutoff Pilotstat assembly, millivoltage automatic valve operator, and optional gas pressure regulator. They require the use of a 750 mv Powerpile generator (thermopile). The generator, heated by the pilot burner flame, provides the electrical energy to operate the combination gas control. A millivoltage thermostat with suitable accessory controls completes the automatic control system for the heating appliance.

Product Features:
  • Includes pilot flow adjustment screw
  • Easy to install, adjust and service; all adjustments and connections are accessible from top of control
  • Add separate energy cutoff (ECO) where codes call for dual safety shutoff
  • Complete safety shutoff on pilot flame failure
  • LITE-RITE (OFF-PILOT-ON) lighting sequence
  • ECO connector for V800 models, Part No. 392451-1

Product Specifications:
  • Description: 3/4 in. NPT x 3/4 in. NPT PowerPile Millivolt Combination Gas Valve with 3.5 in. wc adjustable pressure regulator setting
  • Application: Self-powered automatic control - Use with 750 mV pilot generator
  • Type of Gas: Natural
  • Pressure Regulator: Standard
  • Electrical Ratings: 750 mV
  • Mounting: 0 to 90 degrees in any direction from the upright position of the gas control knob, including vertically
  • Body Pattern: Straight-through - multi-tapped with 1/2 in. right and left outlets plugged, except as noted
  • Pressure Tapping: 1/8 in. npt with plug
  • Pilot Gas Outlet: Compression fitting for 1/4 in. OD tubing
  • Inlet/Outlet Size (in.): 3/4 in. NPT x 3/4 in. NPT with 1/2 in. NPT side outlets
  • Pressure Regulator Setting (psi): 3.5 in. wc Reg. Set/3-5" Adj. Range
  • Pressure Regulator Setting (kPa): 0.87 kPa
  • Pressure Ratings (psi): 1/2 psi
  • Pressure Ratings (kPa): 3.5 kPa
  • Electrical Connections: Terminal block has 3 combination screw and 1/4 in. quick connect terminals
  • Temperature Range (F): 32 F to 175 F
  • Temperature Range (C): 0 C to 79 C
  • Dimensions (in.): 4 3/4 in. high x 4 1/16 in. wide x 3 3/16 in. deep
  • Dimensions (mm): 121 mm high x 103 mm wide x 81 mm deep
  • Approvals, Underwriters Laboratories Inc: UL Component Recognized
  • Approvals, American Gas Association: AGA Design Certified: File no. L2025003
  • Approvals, Canadian Gas Association: CGA Design Certified: File no. L2025003
  • Includes: One 1/2" x 3/8" reducer bushing, two 3/4" x 1/2" reducer bushings

Specs

Inlet Size:

3/4"

Outlet Size:

3/4"

Fuel Type:

Natural Gas

Capacity (BTU):

335000

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Compare Similar Products

Brand
Inlet Size
Outlet Size
Fuel Type
Capacity (BTU)
3/4"
3/4"
Natural Gas
335000
3/4"
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Propane
Natural Gas
280000

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Product Reviews

4.9 out of 20 reviews
100% would recommend this product
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Showing 1-10 of 20 reviews

Glad that supply house is around

I use it to replace a vs821a gas valve which is no longer available did a lot of research and found out that the Vs820a was a replacement for it the only problem is that the 821 has 4 wire spots for 6 wires and the 820 valve has 3 took a while to get the wires on the right terminal but it is working now supply house didn't say that it was a replacement part but it is if you just keep looking at different places you will see that it is a replacement part they have been really good to work with me and the price is a good for one will be buying from them again
Dazed and Confuse
Greenville Tx
4 years ago
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Great service

Excellent service very fast delivery. Great product line.
Gary
Rochester NY
5 years ago
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I would purchase from this company again.

Installed the gas valve in my fireplace and it works great! Very fast shipping.
Mike
Collierville, TN
5 years ago
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I would buy again

Millivolt valve for pool boiler. Quick ship. No issues.
JW
Detroit
6 years ago
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they match a old gas valve

new gas valve works great the old one was 25 plus years old they match it
bill
mich.
7 years ago
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Great service

Exactly as described, competitive price, and delivered next day before noon exactly as promised. Will definitely buy from again.
jimbo the bimbo
boston
9 years ago
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As described

exact replacement, Honeywell
Tall Stacey
Pennsylvania
10 years ago
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Exceptional value!! Unbelievable price!!

Exact Same valve that was on my 40 year old hot water boiler. Was very easy to change.
Bob M.
Monaca, PA
10 years ago
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ok

A+++++++++++++++++
zm
brooklyn
11 years ago
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Good

Arrived earlier. Works great.
First Time Buyer
Union, NJ
11 years ago
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Product Q&A

1 Question
1 Question
ASK A QUESTION

Q: I need to replace a fireplace Honeywell Gas Control Valve. Its for a OLD Majestic Fireplace. The BTU rating on the fireplace is 19,000. Is this valve adjustable to that spec?

Asked by Michael 13 years ago

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I don't think that these valves are adjustable at all. At least on my boiler, the rate of flow is controlled by an adjustable diaphragm that is "downstream" and part of the burner. When I've replaced the valve, I've never had to perform any adjustment. I think that the installation booklet for the valve can be found on the internet, so if there's an adjustment, it will describe it there. By the way. Before you change the valve, you should thoroughly check out the power pile and the circuit from the power pile to whatever electric controller there is and the valve, itself. I had a series of what I thought was valve problems that I eventually traced to an intermittent connection between the valve and the thermostat.

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