Spence Engineering A85 Pilot Freon This robust SPST cold control

This robust SPST cold control features a 27" capillary tube with vapor-filled sensing technology

This part is a direct OEM replacement and is technically identical to the HH18HV140-B

Look for carbon tracking

Technicians will find the S1-37319801821 is a direct drop-in for legacy part numbers 373-19801-820 and 65475

ensuring compliance in critical building automation and BAS environments

Spence Engineering A85 Pilot Freon This robust SPST cold controlThe Spence Engineering A85 Pilot is a high performance air adjusted pilot designed for industrial steam pressure regulation where remote adjustment is required. Built with a rugged cast iron body and stainless steel trim, this pilot is engineered to withstand the rigors of heavy duty boiler rooms and district heating plants. It features a unique 3 7 8: 1 air ratio, allowing technicians to use low pressure air signals to control high pressure steam