Macon Valves
The Macon valve is designed to save energy by controlling hot water or low pressure steam heat in freestanding radiators, convectors, baseboards, fan coil units and the like in a loop, a zone or a unit. The valve, coupled with a Macon thermostat, provides a reliable automatic modulating unit. As room temperature drops, the Macon valve opens to allow more hot water or steam to flow through the radiator, thus allowing more heat into the room. When the room aproaches the selected temperature, the thermostat causes the valve to begin closing off the flow of hot water or steam. This continued monitoring of the temperature is fully automatic, using no electricity whatsoever. The Macon valve can be equipped with any wide variety of Macon thermostats.
Vertical angle valve with straight nipple, NPT - female inlet, male union outlet.
N10637 - 1/2" N10657 - 3/4"
N10677 - 1" N10697 - 1-1/4"
Straight valve with straight nipple. NPT - female inlet, male union outlet.
N10737 - 1/2" N10757 - 3/4"
N10777 - 1" N10797 - 1-1/4"
Horizontal angle valve with straight nipple. NPT - female inlet, male union outlet.
N10837 - 1/2" N10857 - 3/4"
N10877 - 1" N10897 - 1-1/4"
Sweat valve with female inlet and outlet.
N10930 - 1/2" N10950 - 3/4"
N10970 - 1"
- Compact dimensions
- Replaceable insert
- Stainless steel spindle
- Individual room control
- Easy one-trade installation
- Fuel savings up to 30% or more
- Prevents over- and under-heating
- Helps balance the heating system
- Same valve used for hot water or low pressure steam
- All NPT are nickel-plated forged brass
- Minimizes or eliminates expansion noises
- Suitable for nearly any hydronic heating application
- Actuators can be changed without draining the system
- Shipped with a protective cap that can be used to control heating during the installing  period
Vertical Angle NPT:1/2", 3/4", 1", 1-1/4" Straight NPT:1/2", 3/4", 1", 1-1/4"
Horizontal Angle NPT:1/2", 3/4", 1", 1-1/4" Straight Sweat:1/2", 3/4", 1"

Disc Material: EPDM
Body Styles: Straightway or angle
Maximum steam pressure: 15 psig
Maximum water temperature: 250 degrees F
Body tappings: Female inlet, Male union outlet, Female seat
Body Material: Forged brass, NPT valves are nickel-plated
Max. Differential pressure: 20 psi
Overall Height: Add thermostat dimensions

1/2" -1.8 3/4" -2.5 1" -2.74 1-1/4" -5.0
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