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D-060 NS M1 | Non-Slam Combination Air Valve


  • Product Drawings:
  • Install & Maintenance:
PN 16


The D-060 NS M1 Combination Air Valve is a surge-dampening, slam-preventing, 3-stage combination air valve.
It 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.

Main Features

  • Working pressure range: 0.2-16 bar.
  • Testing pressure for the air valve is 1.5 times its working pressure.
  • Maximum working temperature: 60°C.
  • Maximum intermittent temperature: 90°C.

Note: For applications requiring a working temperature above the maximum stated or below 50 C., please consult first with the A.R.I. Applications Engineering Dept.

  • Aerodynamic design enables high flow rates of air both at intake and at discharge.
  • Reliable operation reduces water hammer incidents.
  • Dynamic design allows for high capacity air discharge while preventing premature closure.
  • Screen protected outlet.
  • The outlet screen is protected with a protective cover.

Air Release Component

  • Body made of high strength materials.
  • All operating parts are made of specially selected corrosion- resistant polymer materials.
  • Large sized air release orifice:
    • Dramatically reduces the possibility of obstruction by debris.
    • Discharges high air flow rates.
    • One size orifice for a wide pressure range, achieved by utilizing the rolling seal mechanism.

Valve Selection

  • Size Range: 3”- 10”
  • These valves are manufactured with flanged ends to meet any requested standard.
  • The automatic air release component and the air & vacuum component are available as separate units.

Non-Slam Disc

The built- in throttling device on the Non-Slam disc of the D-060 HF NS M1 Combination Air Valves will allow for the graduated opening and closing of the disc orifice.


  1. The orifice size of the disc can be adjusted to control and throttle the discharge of air during pipeline filling and during the return of the water column after separation.
  2. The controlled discharge of air will reduce surge effects and provide for a silent closure of the air valve.
  3. The closure of the orifice can be determined by running a surge analysis or by a decision taken in the field.
  4. The orifice throttling device allows for a wide range of options from 100% open, partially open, partially closed to 100% closed.


For best suitability, it is recommended to send the fluid chemical properties along with the valve request.
Upon ordering, please specify: model, size, working pressure, threads standard and type of liquid.


Last Updated on: Friday, 16 May 2014