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D-46 Combination Air Valve

Brand: A.R.I. Flow Control Accessories
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The D-46 series Combination Air Valve has the features of both an air release valve and an air & vacuum valve. The air release component is designed to automatically release small pockets of air to the atmosphere as they accumulate along a pipeline or piping system when it is full and operating under pressure.

The air & vacuum component is designed to automatically discharge or admit large volumes of air during the filling or draining of a pipeline or piping system. This valve will open to relieve negative pressures whenever water column separation occurs.
Features
  • Combines the features of both an air & vacuum valve and an air release valve.
  • Triple function:
    • Air & vacuum component discharges large volumes of air during filling of the system
    • Air & vacuum component admits large volumes of air during drainage and at water column separation
    • The air release component releases entrapped air in pressurized systems
  • Dynamic design allows for high velocity air discharge while preventing premature closure.
  • Simple and reliable structure small dimensions, lightweight.
  • Available in sizes: 2", 3", 4".
  • These valves are manufactured with flanged ends to meet any requested standard.
Materials and Corrosion Protection
  • The body is made of high-strength metallic materials.
  • All operating parts are made of specially selected, corrosion- resistant materials.
Application Range
  • Working pressure range: 1.45 to 250 psi
  • Maximum operating temperature: 140° F.
  • Maximum intermittent temperature: 194° F.
  • For installation:
    • Pump stations: after the pump and after the check valve
    • Downstream (after) and upstream (before) of shut-off valves
    • After deep-well pumps
    • On long constant-sloped pipeline segments
    • At peaks along the pipeline and at peaks relative to hydraulic gradient
    • At end lines
    • Before water meters
    • On strainers and filters

1 - 3 of 3 Part Numbers
D-46
D-46
  • Model - Non-Slam Addition
D-46-I
D-46-I
  • Model - On-Way Model
  • One-Way Model - With A Vacuum Breaker, In-Only Attachment, Allows Air Intake Only, Not Allowing Air Discharge
D-46-V
D-46-V
  • Model - On-Way Model
  • One-Way Model - With A One-Way, Out-Only Attachment, Allows Air Discharge Only, Prevents Air Intake
1 - 3 of 3 Part Numbers

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Specifications

Brand

Valve Size

  • 2” (50 mm), 3” (80 mm), 4” (100 mm)

Working Pressure

  • 1.45 to 250 psi

Working Temperature

  • Maximum 140° F

Intermittent Temperature

  • Maximum 194° F

Connection Size

  • 4” NPT Female
  • 3” NPT Female
  • 2” NPT Female

Orifice Area (Sq. in)

  • A/V: 3.04, 7.791, 12.173
  • Auto: 0.02

Weight

  • NS Model: 15 to 47.8 lbs
  • Standard: 14.3 to 45.6 lbs

Enclosure/Body Material

  • Body: Ductile Iron

O-Ring

  • EPDM

Material of Construction

  • Air & Vacuum Float, Snap Ring, NS Disc (Optional) & Flap Shutter (Optional): Nylon
  • Discharge Oulet/Air & Vacuum/Rolling Seal: EPDM
  • Bolt: 316 Stainless Steel
  • Discharge Outlet, Automatic Float & One-Way Out Drain Outlet: Polypropylene
  • Automatic Float Cover & Float Lock: Acetal
  • Pressure Release Outlet Plug: Reinforced Nylon

  • Pump stations: after the pump and after the check valve
  • Downstream (after) and upstream (before) of shut-off valves
  • After deep-well pumps
  • On long constant-sloped pipeline segments
  • At peaks along the pipeline and at peaks relative to hydraulic gradient
  • At end lines
  • Before water meters
  • On strainers and filters

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