The Belimo ZS-101 is dimensionally matched for the ZS-100

Is this relay compatible with 24V control circuits

or significant backdraft

Proper condenser airflow is essential for maintaining compressor efficiency

Is this valve bi-directional

Belimo B240 Ball Valve 30067439-890 The Belimo ZS-101 is dimensionallyFor contractors demanding reliable flow control in hydronic systems, the Belimo B240 ball valve delivers consistent performance. This 1 1 2", 2 way valve features a 37 Cv, engineered for precise equal percentage flow control in various HVAC applications. Constructed with a durable nickel plated forged brass body and a robust stainless steel ball and stem, it's built to withstand the rigors of chilled or hot water systems, accommodating temperatures up