Netafim D-040 Combination Air Valves (PN16)

The DG-10 & D-040 Combination air valves have similar features but they are made of different materials. The DG-10 is rated to 10 bar and the D-040 is rated to 16 bar.

Both models feature a combination air-release valve and an air-vacuum valve. The air-release component of the valves is designed to automatically release small pockets of air as they accumulate at local high points along a pipeline when the pipeline or piping system is full and operating under pressure. The air-vacuum component was designed to automatically discharge or admit large volumes of air during filling or draining of a pipeline or piping system. This valve will open to relieve negative pressures whenever water column separation occurs

APPLICATIONS

• Pump stations: after the pump and after the check valve
• Downstreem (after) and upstreem (before) shut-off valve
• After deep-well pump
• On long water supply lines
• At peaks alon the line
• At the end of lines
• Before water meter
• On strainers and filters

FEATURES & BENEFITS

• Light, simple and reliable structure
• The valve prevents premature closing by discharging air at high velocity, exceeding 11 psi differential pressure
• The orifice of the automatic continuous acting valve is larger than in any other air release valve of it's kind, therefore it discharges air at higher flow rates
• The size of the automatic opening reduces the the possibility of obstruction by debris
• The valve design features a rolling seal mechanism which is less sensitive to pressure differentials than a direct float seal. It accomplishes this by having a comparably large opening for a wide pressure range (up to 16 bar)
• The body is made of high strength plastic, and all operating parts are made of specially selected corrosion resistant materials
• Due to its light weight, the valve may be installed on plastic piping systems, as well as other lightweight piping
• A threaded drainage outlet enables removal of excess fluids
• The float is made for low sealing pressure (DG-10)

TECHNICAL SPECIFICATIONS

• D-040 operating pressure range: 0.2 -16bar (3-230psi.)
• D-040 testing pressure: 25 bar (360 psi.)
• Working Temperature: 60°C
• Maximum instantaneous working temperature: 90°C