Specification Sheet - AirVent/Vacuum Relief Valve Model No. YD-500-34 Bidding Specifications: - Vent closing pressure: 4 psi (0,27 Bar) - Vacuum relief pressure: 4 psi (0,27 Bar) - Maximum operating pressure: 100 psi (6,8 Bar) - Inlet thread size: 1/2" (16mm) MIPT - Body dimensions (L x W x D): 1.460" x .980" x .980" (37 x 25 x 25mm) - Weight: .25 oz. (7,08 gm.) The air vent/vacuum relief valve shall be an O-ring seal type with inlet threads of 1/2" (16mm) MIPT capable of venting air until 4 psi (0,27 Bar) is achieved at system startup, and vacuum relief when 4 psi (0,27 Bar) is reached during system shutdown. The air vent/vacuum relief valve shall be rated at a maximum operating pressure of 100 psi (6,8 Bar). The air/vacuum relief valve body and shuttle shall be constructed of corrosive-proof engineering thermoplastics. The seal shall be a rubber O-ring. The air vent/vacuum relief valve shall be model number _____________ and shall be provided by The Toro Company, Ag Irrigation Division.