3/4 X 3/4" Slow Opening Millivolt Gas Valve (300,000 BTU) Zoom

3/4 X 3/4" Slow Opening Millivolt Gas Valve (300,000 BTU)


Brand: Robertshaw

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In Stock! Ships in 24-48 Hours
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Capacity: 300000 BTU
Capacity (BTU): 300000
Inlet Size: 3/4"
Outlet Size: 3/4"
Side With Plugs: Straight Thru
Pressure Reg Setting: 3.5" W.C. NAT. GAS

Description for Robertshaw 700-511

Note: Image shown may not represent actual product

The 700 millivolt gas valves are wall thermostat actuated combination gas valves. These controls combine a manual gas cock, automatic pilot safety valve and a millivolt operator. The automatic pilot safety is separate from the gas cock and provides gas shutoff in case of pilot outage. Regulated and non-regulated models are available. Standard features include: pilot outlet, pilot gas filter and pilot adjusting key. VALVES CAN BE MOUNTED IN ANY POSITION EXCEPT UPSIDE DOWN. Consult ordering chart for individual control specifications.


Most appliances manufactured in the USA and Canada are manufactured to meet the standards set forth by the American National Standards Institute (ANSI). A revision in the standards "mis-wiring requirements for gas valves" was effective January 1, 1996. The reason for this standard was so that you as a service technician could disconnect the gas valve wires and reconnect them without making a mistake. Therefore all Robertshaw® millivolt gas valves now meet the new standard. The 700-500 series millivolt gas valves have a 1/4" quick connect terminal and a 3/16" quick connect terminal on the terminal block. There is NO terminal screw (or threads) on the side that has the 3/16" terminal. If your old application used a terminal screw, you will need to use the 3/16" adaptor terminal that is included with this gas valve. NOTE: Does not apply to 700-502, 700-504, 700-506 and 700-511 which have the coaxial connection.

Will accept both types of thermopiles (coaxial or 2-lead). Use 1751-003 to convert valves to Natural Gas. Use 1751-013 to convert valves to L.P. Gas.

3/4 X 3/4" Slow Opening Millivolt Gas Valve (300,000 BTU)


by PowerReviews
Robertshaw3/4 X 3/4" Slow Opening Millivolt Gas Valve (300,000 BTU)

(based on 2 reviews)

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Great Replacement

By Pool Guy

from Michigan

Verified Buyer

Comments about 3/4 X 3/4" Slow Opening Millivolt Gas Valve (300,000 BTU):

I bought this to replace a gas valve in a pool heater. This was a newer model than the valve already in the heater. This newer model worked better than the previous and the pool heater has never worked better.

(1 of 1 customers found this review helpful)


Great universal valve for pool heater

By Handyman

from Cuyahoga Falls, OHIO

Verified Buyer

Comments about 3/4 X 3/4" Slow Opening Millivolt Gas Valve (300,000 BTU):

This is a great universal millivolt valve to replace a slow opening gas valve on pool heaters.
Good features and universally adaptable with two options for pilot location and bushings to reduce to 1/2" in/out. Found this to be the best price on the market and shipped out fast for a quick repair.
I would recommend keeping 1 of these on hand for any universal install needing a millivolt valve. Do remember to adjust pilot Flame after install to keep from burning cartridge out.

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  • 3/4 X 3/4" Slow Opening Millivolt Gas Valve (300,000 BTU)


    What is the BTU range of this unit? I need to produce 57000 of input with 3/4" threaded pipe. Can the regulator be adjusted down to achieve this lower rating?
    Does anyone know how many PSI of natural gas flow will produce 57000 BTU per hour?
    Asked on 9/23/2010 by Jeff from Burney, CA

    1 answer



      This unit has a capacity up to 300,000 BTU's. There isn't a way to adjust the unit to achieve a lower rating. There isn't a set flow rate you can set to have this valve operate at 57,000 BTU output. However, the unit will only take what it needs to function properly, so it will only use the BTU's it needs.

      Answered on 9/24/2010 by PexSupply Staff from NY
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