The RT-921 series offers both non-indicating and integral temperature indication control of liquid, air or gas in applications with steam or water as the heating source.

Other features include:

Seamless Robertshaw bellows used for

closer control and extended life

Small overall size, ideal for OEM use

Set point adjustment wheel

Chevron “lifetime” stem packing made

of Teflon or EPT rubber U-Cup for water

service

Valves in a wide range of sizes, actions,

styles, materials, etc.

Capillary selection of materials and

lengths

RT-921A1 non-indicating unit shown

RT-921B1 offers integral temperature

indication