Hansen Solenoid Valves are designed and built specifically for industrial refrigeration. These high-quality valves are compact, strong-bodied, and reliable. Stainless steel pistons or disc-pistons with Teflon seals are used to overcome the problem of valve sticking due to dirt or lack of oil. Pilot seats are polished stainless steel on Teflon discs and main valve seats and discs align for tight closing. Each valve is tested on a sensitive leak detection system to ensure reliable operation, safety, and tightness.