AIR VALVE - 1/8 COIN KEY

This 1/8-inch adjustable steam radiator air vent uses a coin-slot setting to change the venting rate, so heat can be balanced across a one-pipe steam system without special tools. It vents air on a steam call and closes when steam reaches it.

Key Features:

• Coin-Slot Adjustment -- Set the venting rate with a coin -- no special tool needed.
• Adjustable Venting Rate -- Slow the rate on near radiators, open it on far ones for even heat.
• Automatic Close -- Closes when steam or heat reaches the valve.
• 1/8 in. NPT Connection -- Threads into the radiator vent tapping.
• One-Pipe Steam -- For low-pressure one-pipe steam radiator service.

Where to Use:

• Building maintenance -- Replacing failed or noisy radiator vents on one-pipe steam systems
• Steam system balancing -- Dialing the venting rate room by room to even out heat between near and far radiators
• Property heating upkeep -- Tunable vents for apartment buildings where rooms heat unevenly