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The F/FG series valve is the most economical way to protect outdoor pipelines and vessels from expensive freeze damage. A thermal actuator automatically opens the valve before the temperature of the fluid drops to the freezing point. By bleeding the fluid in the system only when the danger of a freeze-up exists, the valve delivers positive freeze protection with minimal waste. This intermittent operation provides substantial savings in water and sewer costs, making the F/FG series valve an ideal, economical replacement for systems with manually operated block valves that are opened seasonally. The F/FG series can also be used in most applications that involve automatic control of fluids, such as glycol, oil, light chemicals, etc.

Note: Specify temperature between 35° and 255°F in 5°F increments. Differential from full open to full closed is typically 10° to 15°F. Valve opens/closes gradually.

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Item #

Valve Type

Port Size

Maximum Operating Pressure

Valve Action

Body Material

1/2F---BDT N/A F Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 1/4 in N/A 200 psig N/A Direct N/A Tubular Stainless Steel
3/4F---ADB N/A F Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 1/8 in N/A 200 psig N/A Direct N/A Bronze
3/4F---ADS N/A F Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 1/8 in N/A 200 psig N/A Direct N/A Stainless Steel
3/4F---BDB N/A F Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 1/4 in N/A 200 psig N/A Direct N/A Bronze
3/4F---BDS N/A F Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 1/4 in N/A 200 psig N/A Direct N/A Stainless Steel
3/4F---CDB N/A F Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 3/8 in N/A 200 psig N/A Direct N/A Bronze
3/4F---CDS N/A F Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 3/8 in N/A 200 psig N/A Direct N/A Stainless Steel
1/2FG---ADB N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 1/4 in N/A 150 psig N/A Direct N/A Bronze
1/2FG---ADS N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 1/4 in N/A 150 psig N/A Direct N/A Stainless Steel
1/2FG---BDB N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 3/8 in N/A 150 psig N/A Direct N/A Bronze
1/2FG---BDS N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 3/8 in N/A 150 psig N/A Direct N/A Stainless Steel
1/2FG---CDB N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 1/2 in N/A 150 psig N/A Direct N/A Bronze
1/2FG---CDS N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 1/2 in N/A 150 psig N/A Direct N/A Stainless Steel
3/4FG---ADB N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 1/4 in N/A 150 psig N/A Direct N/A Bronze
3/4FG---ADS N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 1/4 in N/A 150 psig N/A Direct N/A Stainless Steel
3/4FG---BDB N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 3/8 in N/A 150 psig N/A Direct N/A Bronze
3/4FG---BDS N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 3/8 in N/A 150 psig N/A Direct N/A Stainless Steel
3/4FG---CDB N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 1/2 in N/A 150 psig N/A Direct N/A Bronze
3/4FG---CDS N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 1/2 in N/A 150 psig N/A Direct N/A Stainless Steel
1FG---ADB N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 1/2 in N/A 125 psig N/A Direct N/A Bronze
1FG---ADS N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 1/2 in N/A 125 psig N/A Direct N/A Stainless Steel
1FG---CDB N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 3/4 in N/A 125 psig N/A Direct N/A Bronze
1FG---CDS N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 3/4 in N/A 125 psig N/A Direct N/A Stainless Steel
1-1/2FG---ADB N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 3/4 in N/A 200 psig N/A Direct N/A Bronze
1-1/2FG---ADS N/A FG Series Automatic Freeze Protection and Fluid Temperature Control Valve N/A 3/4 in N/A 200 psig N/A Direct N/A Stainless Steel
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