Level Control Valve with Altitude Pilot (Sizes 3''- 6"; DN80-150) Description: The BERMAD Model IR-450-80-XZ Level Control Valve with Altitude Pilot is a hydraulically operated, diaphragm actuated control valve. The valve hydraulically shuts at preset reservoir high level and fully opens in response to an approximately one-meter (three-foot) level drop, as sensed by the 3-way altitude pilot mounted on the main valve approximately one-meter (three-foot) level drop, as sensed by the 3-way altitude pilot mounted on the main valve. Installation: 1. Ensure enough space around the valve assembly for future maintenance and adjustments. 2. Prior to valve installation, flush the pipeline to insure flow of clean fluid through the valve. 3. For future maintenance, install Isolation gate valves upstream and downstream from Bermad control valve. 4. Install the valve in the pipeline with the valve flow direction arrow in the actual flow direction. 5. For best performance, it is recommended to install the valve horizontally and upright. 6. After installation carefully inspect/correct any damaged accessories, piping, tubing, or fittings. 7. It is highly recommended to install a strainer Bermad model 70F upstream from the IR-450-80XZ, to prevent debris from damaging valve operation. 8. Prepare a 1" female threaded "Hydrostatic level sensing port"; consist of a cock-valve and a filter, at a "still-point" at the bottom of the reservoir. Note: The drainage pipe might provide this "still-point", a location not influenced by flow velocity as in filling and outflow pipes. 9. Pull a ½” sensing tube, from the "level sensing port" at the bottom of the reservoir, to the valve. Install a ½” female thread adaptor at the valve-side end of the sensing tube. Ensure tube protection by a covered cable-canal. Apply a fixed effective tubes route. 10. Connect the control tube end, using ⅜” copper or reinforced plastic tube, to the altitude pilot and to the "level sensing port", according to control drawing

Commissioning & Calibration: 1. Confirm that cock valves [1] is open (handle parallel to cock-valve body), and that cock valve [6] is directing the pilots to valve control chamber (according to the flow arrow on the handle) 2. Open fully the upstream and the downstream isolating valves & confirm that the supply pressure is typical. 3. Fill up the reservoir until the level reach its desired shut-off level. Note: To save the water & time involved with filling and emptying the reservoir, simulate upper & Low levels by temporary connecting a transparent plastic tube to the pilots sensing chambers....

BGRMAD IrrigationTrouble-Shootina: Symptoms Preventive Maintenance: 1. System operating conditions that effect on the valve should checked periodically to determent the required preventative maintenance schedule. 2. Maintenance instructions: 2.1.1. Metric and imperial wrenches 2.1.3. Visual inspection to locate leaks and external damages 2.2. Functional inspection including closing, opening and regulation. 2.3. Close upstream and downstream isolating valves (and external operating pressure when used) 2.4. Once the valve is fully isolated vent pressure by loosening a plug or a fitting. 2.5. Open...