What is the contact rating for this Lennox pressure switch

necessitating a full probe assembly replacement

Durable Construction: Built to withstand the constant static pressure in air handling units (AHUs)

Integrated into the safety circuit

Lennox 10B17 Potential Relay – Model 10B1701

Belimo B311B Valve Els PW 17895 What is the contact ratingThe Belimo B311B is a 1 2 inch NPT 3 way characterized control valve engineered for precision in hydronic systems. With a flow coefficient of 1. 9 Cv, this valve features an A port equal percentage flow characteristic and a modified B port for constant common port flow, ensuring stable heat transfer even during part load conditions. Constructed with a nickel plated forged brass body and a chrome plated brass ball, it is rated for chilled or hot water