Viair 1/4" Female to Male Check Valve

One Way Valve


8 reviews
Suggested Addons
Add Gold Extended Warranty Tooltip
1 year add-on to existing warranty. Does NOT cover accidental damage, no advanced replacement.
Click here for more information!
+See price at checkout
Add Platinum Extended Warranty Tooltip
2 year add-on to existing warranty. DOES cover accidental damage and advance replacement.
Click here for more information!
+See price at checkout

This Check Valve flows from the ¼″ Female NPT (in) ¼″ Male NPT (out). These check valves have been specifically designed to work with Viair air compressors. They provide maximum resistance to prevent any air leaks without dampening the power of your Viair air compressor.

The check valve is threaded 14″ M NPT on one side and 14″ F NPT on the other. It threads flawlessly into any NPT ported fitting or tank.

What Is a Check Valve?

A check valve is a critical part of any air compressor system. A check valve ensures that air can only flow one-way through it. In an air system, it normally sits between an air tank and an air compressor and prevents tank pressure from leaking back through the air compressor. Without this, it would take much longer to fill your air tank, leave the potential for leaks to occur, and even damage your air compressor.

Please Note: - During installation, only use appropriate size wrench and turn 15° past hand tight using thread sealant or Teflon tape.

  • 1/4" NPT
  • Female to Male Check Valve
  • Viair 1/4" Female to Male Check Valve
  • Part Number: CV-4M4F
  • Manufactures Part Number: 92831
  • Threading:  ¼″ Female NPT (in) ¼″ Male NPT (out)
  • Money-Back Guarantee/Refund Policy
    All merchandise unless otherwise indicated may be returned within 30 days from the shipment arrival date for a refund. A Returned Merchandise Authorization (RMA) number is required for all returns. A 15% restocking fee may apply. Additional deductions may be made to reflect the products current market value. These terms apply to all refunds. Most products are shipped with a refund/replacement guarantee period unless otherwise noted in the product listing. Customers must inform of any order discrepancy within 7 days from the invoice date so that we may investigate and resolve the situation accordingly.
  • Warranty
    This product is backed by Viair's One-Year Manufacturer's Defect Warranty!
  • Satisfaction Guarantee offers our customers a 30-day satisfaction replacement or refund guarantee on all purchases, except when otherwise noted in the product listing.
  • Cross-Shipments will not cross-ship returned merchandise.
  • Physical Damage Policy
    Physical damage to any product purchased at will effectively void warranty coverage. Physical damage includes but is not limited to improper handling and/or any other type of damage sustained by irregular usage.

Warnings & Notices

Safety warning icon

This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to

Customer Reviews

5.0 Based on 8 Reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
Joseph B.
United States United States

New check valve fixed my fuse blowing problem!

One of my dual compressors was tripping fuses. This new check valve solved the issue.

Roger c.
United States United States

Roger Cates

Parts were great thanks for your quick service and Having what is needed.

George W.
United States United States


Been using these products since this company started. Wouldn’t go anywhere else

James D.
United States United States

Great product if you're installing an air horn make sure you put one of these in.

This is really handy I did a lot of research before I ordered my part and this check valve that goes straight in the tank before your airline does so it makes her your Air does not come back out I need to install this on all my things LOL but great product works like a champ I do recommend it to anyone.

Chuck D.
United States United States

Customer service

Once again the guys at Hornblasters come through with their customer service. I had an issue, called tech support and they helped me through it.