ARI D-040 User Manual

20 pages

To Next Page

To Next Page

Page #1 background image

Loading...

Page #1 background image

D-040.IOM.ENG02

Installation, Operation & Maintenance

COMBINATION AIR VALVE

MODEL D-040

The following is a step by step narrated description of the A.R.I. D-040 Combination Air Valve installation,

operation and maintenance processes.

The D-040 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. Please consult A.R.I. for the pressure and temperature framework of this model specifications

table and for other products designed for hazardous liquids systems.

Table of Contents

Questions and Answers:

H
Hailey HawkinsAug 5, 2025
What to do if my ARI Control Unit valve is continuously leaking?
- A
  Amanda LeeAug 6, 2025
  If your ARI Control Unit valve is continuously leaking, first check the line pressure to ensure it's at least 0.2 bar (3 psi) to seal properly. Also, consider whether the valve is installed correctly, especially if it's level with the water level in a tank. Inadequate pressure can prevent sealing. Additionally, perform the steps for basic maintenance to clear any debris that may be lodged in the seal or O-rings.
A
April MillerAug 13, 2025
Why is my ARI D-040 valve leaking from the threads?
- S
  Sandra YoderAug 13, 2025
  If your ARI Control Unit valve leaks from the threads, the issue might be a damaged O-ring or stripped plastic threads. Try replacing the base O-ring and check for cross-threading. If the base is damaged, consider replacing it, or upgrading to a metal base for better durability.
A
Amber RodriguezAug 20, 2025
What is the outlet thread size needed to attach a vent/drain pipe to my ARI Control Unit?
- F
  floydjasonAug 20, 2025
  If you need to attach a vent or drain pipe to the discharge outlet of your ARI Control Unit, the thread size depends on the model. For a 1" D-040, it has a 3/8” female thread, while a 2” D-040 has a 1¼” female thread. Ensure the end of the pipe remains open for the valve to function correctly.

ARI D-040 Specifications

General

Brand	ARI
Model	D-040
Category	Control Unit
Language	English

Related product manuals

Preview: ARI 1108