Level Control and Pressure Sustaining Valve with Bi-Level Vertical Float The BERMAD Model IR-453-66 Level Control and Pressure Sustaining Valve with Bi-Level Vertical Float is a hydraulically operated, diaphragm actuated control valve that controls reservoir filling, opening at preset reservoir low level, and shutting at preset high level. During filling, it sustains minimum upstream pressure regardless of fluctuating flow or reservoir level. Features and Benefits ■ Line Pressure Driven, Level and Pressure Control □ Prioritizes irrigation over reservoir fill-up ■ Bi-Level Hydraulic Vertical Float □ On/Off service □ Flexible adjusting Range ■ Advanced Globe Hydro-Efficient Design □ Unobstructed flow path □ Single moving part □ High flow capacity ■ Fully Supported & Balanced Diaphragm □ Requires low opening and actuation pressure □ Excellent low flow regulation performance □ Progressively restrains valve closing □ Prevents diaphragm distortion ■ User Friendly Design □ Easy access to valve and float □ Easy level and pressure setting □ Simple in-line inspection and service Typical Applications ■ Full Range of Low Level Reservoirs ■ Unavailable Power Supply Locations ■ Limited Supply Pressure Systems ■ Systems Irrigated Directly from Fill-Up Line ■ Backup for Reservoir Supply Valves [1] BERMAD Model IR-453-66 opens at reservoir preset low level, sustains minimum preset supply pressure, and shuts at reservoir preset high level. [2] Bermad Bi-Level Vertical Float Model “66” in stilling tank [3] BERMAD Strainer Model 70F

Flow Chart BERMAD IrrigationIR-453-66 For full technical details, refer to Engineering Section. Technical Data Patterns and Sizes: Globe: 3-16”; DN80-400 Angle: 3-4”; DN80-100 End Connections: Pressure Rating: 16 bar; 232 psi Operating Pressure Range: 0.5-16 bar; 7-232 psi For lower pressure requirements, consult factory Setting Range: 1.5-16 bar; 22-232 psi Setting ranges vary according to specific pilot spring. Please consult factory. Materials: Body and Cover: Polyester Coated Cast or (10”; DN250 and larger) Ductile Iron Spring: Stainless Steel Diaphragm: Nylon fabric Reinforced NR with rugged...