A.R.I. D-020

Reduced Bore, Combination Air Valve for Non-clean Water

A.R.I. D-020 is a reduced bore, Combination Air Valve installed on non-clean water transmission systems. The Air Valve is designed to improve hydraulic operation by protecting the pipeline, increasing pipeline efficiency, and reducing energy requirements. The unique body shape of the valve, enables a continuous air gap that separates the non-clean water from the sealing
mechanism and helps to avoid deposits or blockage.

Applicable for: Desalination & Seawater, Mines, Marine - Ballast Water, Oil & Gas, Food Industry, Power Plant Cooling, CBM, Hydro / Thermal Power.

Certifications

CE PED Certificate of Conformity

ATEX Certified Explosion Protection, Directive 2014/34/EU (ATEX)

Downloads

Product Page (PDF)

IOM (PDF)

Technical Specifications

Size Unit

Size range

DN50 - DN200 (2" - 8")

Pressure rating

PN16

Working pressure range

0.05 - 16 bar

Working temperature

Maximum working temperature:

60° C

Maximum intermittent temperature:

90° C

Available construction materials

Stainless Steel, Cast Steel, Super Duplex

End connection type

Flanged ends to meet various requested standards.

2″, 3” valve connections: flanged or threaded BSP/NPT.

Optional add-on components

One-way Out – allows for air discharge only, prevents air intake.
One-way In – allows air intake only, not allowing air discharge.
Non-slam – discharge-throttling attachment, allows full air intake, throttles air discharge.

A.R.I. D-020

A.R.I. D-020

Features & Benefits

Conical body / funnel-shaped lower body

Maximum air gap, minimum body length
Residue matter falls back into the system pipeline

Continuous air gap

Separates the liquid from the sealing mechanism

Aerodynamic float assembly

High velocity air will not close the valve under rapid filling operation
Reduces accumulation of fat or grease buildup
Free movement will not unseal the sealing mechanism

Sealing assembly

Provides smooth, reliable opening/closing, and leak-free sealing over a wide range of pressures

Cushioned spring connection

Cushioned joint allows continuous air discharge under vibration conditions related to turbulence from pump start and shut-off, or from flow fluctuations.