Facebook Pixel
Sign-Up Bonus
Get 500 Reward Points instantly when you join.
Redeem Instantly
50 points = $1 off at checkout.
Earn as You Shop
$1 spent = 1 point every time you order.
Member Perks
Unlock exclusive member-only savings and offers.

Register and Earn 500 Reward Points
Toggle Nav
Search
Toggle Nav
Join Our Loyalty Program
main product photo

Barnes & Jones 3875 3/4" NPT Vacuum Breaker 125 PSI

Be the first to review this product
Special Price $89.71 Regular Price $103.16
In stock
SKU
3875
The Barnes & Jones 3875 Vacuum Breaker is a mechanical backflow prevention component that has a 3/4 inch NPT connection with a rating of 125 PSI in HVAC systems. It permits the flow of air into a pressurized line when a siphon condition is created so that contaminated water is not pulled back into the potable water supply. This vacuum breaker is installed in the plumbing, boiler, or hydronic heating systems in low points or around equipment drain points to protect the integrity of the systems.
Add to Wish List
HVAC Controls & Electrical, Safety & Limit Devices,
Manufacturer:
https://www.partshnc.com/media/catalog/product/3/8/3875.jpg
Manufacturer Name: Barnes & Jones
Product Number: 3875
OEM Part Number: 3875
Product Description: 3/4" Vacuum Breaker For Steam 125 Psi Max
Weight:1lbs/453.59g

Choose the best HVAC equipment parts and supplies from PartsHnC!

  • Same Day Shipping

  • Best Quality And Best Price

  • Wide Range of Inventory

  • Best Customer Service

Have More Questions or Need Help to Place The Order?
Reach us at (866)773-0907 or [email protected]

Reviews
Write Your Own Review
You're reviewing:Barnes & Jones 3875 3/4" NPT Vacuum Breaker 125 PSI
Your Rating
Product Questions (2)
Customer Questions
What maintenance is required for the Barnes & Jones 3875 Vacuum Breaker?

Regularly inspect the vacuum breaker for leaks, corrosion, or debris buildup. Test operation to ensure proper pressure relief and seating. Clean internal components carefully and replace worn seals to maintain safe and effective performance.

What are common issues with the Barnes & Jones 3875 Vacuum Breaker?

  • Leaking or dripping at the connection.
  • Failure to relieve vacuum properly.
  • Corrosion or mineral buildup.
  • Sticking or worn internal seals.

Installation Steps

Step 1: Turn off the water supply before installation for safety.

Step 2: Remove any existing vacuum breaker from the system.

Step 3: Apply thread sealant or Teflon tape to the threads.

Step 4: Screw the vacuum breaker into place securely.

Step 5: Ensure it is upright and properly aligned for correct operation.

Step 6: Turn on the water supply and check for leaks.