D-43 | Combination Air Valve for Industry

Description

Main Features

• Working pressure range: 0.2 - 10 bar; 0.2 - 16 bar.
• Testing pressure: 1.5 times the maximum working pressure of the air valve.
• Maximum working temperature: 60°C.
• Maximum intermittent temperature: 90°C.
• Reliable operation reduces water hammer incidents.
• Dynamic design allows for high capacity air discharge while preventing premature closure.
• Lightweight, small dimensions, simple and reliable structure.
• The discharge outlet enables the connection of a vent hose/pipe.
• The large size of the automatic air release orifice relative to the air valve body:
  • Discharges air at high flow rates.
  • Lessens the danger of its obstruction by debris.
  • Enables the usage of the rolling seal, making it less sensitive to pressure differential than a direct float seal.
• The body is made of high-strength UV protected composite materials 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 systems.
• Minimum down-time for maintenance – all operating parts are consolidated into one replaceable cartridge.

Valve Selection

• Size range: 2” threaded male connections, NPT or BSPT.

Options

• The D-43 air valve is available in the following options:
  • One-way models
    • D-43-V -With a one-way, out-only attachment, allows air discharge only, prevents air intake (all models).
    • D-43-I -With a vacuum breaker, in-only attachment, allows air intake only, not allowing air discharge
    • D-43-NS -With a non-slam, discharge-throttling attachment, allows full air intake, throttles air discharge
  • Upper Drain Outlet
    • The D-43 upper drain outlet will drain accumulated water when the air valve is under pressure and sealed. This application is required when impure water accumulates above the sealing mechanism and is not permitted to enter the system when vacuum conditions occur.
    • A drain pipe can be attached to the upper drain outlet to direct the water away from the D-43 air valve.
    • As standard, the D-43 air valve comes with the upper drain outlet sealed. Optionally, the D-43 can be ordered with the upper drain outlet open and with or without the attached drain pipe. (The upper drain outlet can also be easily drilled open in the field.)
  • Male Threaded 2" Inlet
    • The D-43 air valve is available with a male threaded 2" inlet adaptor in both BSP and NPT.