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D-46 Combination Air Valve
Brand: A.R.I. Flow Control AccessoriesThe 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
- Model - Non-Slam Addition
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
- 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
Specifications
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