Printer friendly page

Fresno F035-20000 3" Continuous Acting Air Vent

SKU: 4289

Save 21% · Retail: $208.00

  Available to Ship in 1-2 weeks

Ships From Price Qty
Order From Manufacturer
Available to Ship in 1-2 weeks

About the Fresno F035-20000

Continuous acting air vent used for air relief in water lines

Product Details

Product: Air Relief
Manufacturer: Fresno
Use: Water
Connection Type: Threaded
Mpn # F035-20000
Weight 11.00 lbs.

Product Features

  • Exhausts large volumes of trapped air from pipelines
  • Provides continuous air release during system operation
  • Improves energy efficiency as pump power requirements decrease
  • Promotes full line capacity and provides vacuum protection
  • Standard NPT pipe threads for ease of installation


4.5 out of 5 rating is our rating for PlumbersStock, we got that rating because we have lots of experience and great people with expertise in plumbing. BUT WE WANT YOUR HELP. This product doesn't have any reviews yet, and we don't want to write our own reviews. It is more valuable to us that the customers get to share their experience with our products. Please, if you have any experience with this product, take a moment to share and help someone else who is trying to make a decision. Thank you!

Questions & Answers


Hi! Thank you for posting a question regarding the Fresno F035-20000 Air Vent. Air release vents are also known as automatic air valves, small orifice air valves and pressure air valves. These vents continue to discharge air, usually in smaller quantities, after the air vacuum valves close shut as the line is pressurized. It greatly improves the efficiency of centrifugal pumps by releasing entrapped air while ensuring continuous priming by not allowing air intake. Also, it enables siphon build-up by releasing infiltrated and/or trapped air and maintains the siphons by continuously releasing air while not allowing air intake. We hope this helps. Thank you for visiting Have a great day!

Shopper Award