SKU: 22842319384

D-040 Combination Air Valve – Dual Air Release & Vacuum Valve for Piping Systems

Sale price$117.90 Regular price$131.00
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Ships within 48 hours · Estimated delivery Aug 2 - Aug 7

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Description

D-040 Combination Air Valve – Dual Air Release & Vacuum Valve for Piping SystemsEnhance the efficiency and safety of your pipeline systems with the D 040 Combination Air Valve, designed for dual functionality as both an air release valve and an air & vacuum valve. This versatile valve is ideal for a wide range of applications, ensuring smooth operation and protecting your system from pressure surges, vacuum conditions, and air pockets. Key Features: Triple Functionality: Discharges large air volumes during system filling. Admits

Enhance the efficiency and safety of your pipeline systems with the D-040 Combination Air Valve, designed for dual functionality as both an air release valve and an air & vacuum valve. This versatile valve is ideal for a wide range of applications, ensuring smooth operation and protecting your system from pressure surges, vacuum conditions, and air pockets.

Key Features:

Triple Functionality:

Discharges large air volumes during system filling.

Admits large air volumes during system drainage or water column separation.

Releases entrapped air from pressurized systems.

Innovative Rolling Seal Mechanism: Prevents premature closure while allowing high-velocity air discharge.

Wide Compatibility: Available in multiple sizes (1/2", 3/4", 1", 2") with threaded male connections (NPT/BSPT).

Robust Construction: Made from durable materials for long-lasting performance under challenging conditions.

Protective Shell Option: Anti-vandalism and anti-theft design available for added security.

Specifications:

Working Pressure Range: 0.2 – 16 bar

Operating Temperature: Up to 60°C continuous, 90°C intermittent

Applications:

Pump Stations

Upstream/Downstream of Shut-Off Valves

After Deep-Well Pumps

Constant-Slope Pipelines

Pipeline Peaks Relative to Hydraulic Gradient

Benefits:

Prevents destructive vacuum conditions by admitting air during negative pressure events.

Ensures smooth operation by releasing trapped air in pressurized pipelines.

Reduces pressure surges and enhances system longevity.

Easy installation at key pipeline points such as pump stations and high-gradient areas.

The D-040 Combination Air Valve is the ultimate solution for maintaining optimal pipeline performance in agricultural irrigation systems, industrial piping, and municipal water systems. Its compact, reliable, and efficient design makes it an essential component for both small-scale and large-scale applications.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 22842319384

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Karen V.
Grantham, US
★★★★★ 5
Es muy bella
Gem Type: no gemstone, Item Display Length: 7.5 Inches
Enamorada de mi pulsera muy delicada
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Reviewed in the United States on March 27, 2026
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cristina dominguez
Houston, US
★★★★★ 1
Misleading and not worth it
Gem Type: no gemstone, Item Display Length: 6.5 Inches
This bracelet is very misleading. It’s very very thin and is very delicate. You can barely see the charms. Definitely not worth the price I paid. Do not buy.
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Reviewed in the United States on January 30, 2026
M
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Marshanti
Waukegan, US
★★★★★ 5
Beautiful bracelet very dainty!
Gem Type: no gemstone, Item Display Length: 6.5 Inches
Beautiful bracelet very dainty! In the picture the bracelet looks like it is a little thicker. In person it is very thin and dainty. If you have broken bracelets easy in the past I would not recommend. It is very beautiful on though!
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Reviewed in the United States on July 6, 2024
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Cathy Nelson
Lexington, US
★★★★★ 5
14kt Four Leaf Clover Bracelet
Gem Type: no gemstone, Item Display Length: 6.5 Inches, Gem Type: no gemstone, Item Display Length: 6.5 Inches
I purchased this bracelet for my niece who is traveling to another country to teach kids. This bracelet is beautiful, well-designed, and dainty just like her. I know she is going to love this. I give this bracelet 5 stars.
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Reviewed in the United States on June 12, 2024
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Ralf Hallmann
Boise, US
★★★★★ 2
To fragile for everyday use
Gem Type: no gemstone, Item Display Length: 6.5 Inches
This item is very small and fragile. To me it is not wearable because it seems like it will break anytime
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Reviewed in the United States on December 12, 2025

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