Pay in 4 interest-free payments of $199.07 Learn more
Ships within 48 hours · Estimated delivery Sep 7 - Sep 12
Proven Reliability: Features a liquid-filled sensing element for consistent accuracy across the aquastat controller lifecycle
" or if the burner trips on a high-limit error while the heat exchanger is within normal operating temperatures
Upgrade and maintain system integrity with the York S1-331-03009-000 Control
making it a versatile pneumatic receiver controller for maintaining stable temperature and humidity levels
McDonnell & Miller 157S Controller R-410A Proven Reliability: Features a liquid-filledThe McDonnell & Miller 157S is a heavy duty combination low water cut off and pump controller engineered for commercial and industrial steam and hot water boilers. This specific OEM part #173502 features the 157S series head mechanism (part #173003) equipped with a snap acting SPDT switch. Designed for high pressure applications up to 150 psi (10. 5 kg cm), this controller ensures precise liquid level management, acting as a critical failsafe by
US$ 31.50
US$ 87.99
US$ 79.99
US$ 36.50