Watts BV-1004 Check Valve, Bronze, Compression

The Watts BV-1004 is a 4" backwater valve with Compression connections. It sits in the building drain and seals against reverse flow to keep sewer backups out of the building. It features a bronze body.

This Watts backwater valve prevents sewer backups and is made up of a sturdy, durable neoprene gasket and sealing float with bronze compression plates and bolts. It fits 4 inch pipes and features a stainless steel light-tension closure spring for a secure, tight seal every time preventing unwated wastewater return.

Features

• 4" pipe size
• Neoprene gasket
• Bronze compression plates and bolts
• Stainless steel light-tension closure spring
• Prevent odors, trap evaporation, and unwanted wastewater return

Common Questions

Where does this valve get installed?

The BV-1004 installs in a horizontal drain line, sized to the pipe it serves, and must stay reachable for inspection and cleaning — most codes require it.

Will it block normal drainage?

No. It sits normally open, so waste drains through it the way it would through plain pipe. It closes only when flow reverses, which is what keeps a surcharging sewer out of the building.

Specifications

• Type: Check
• Size: 4"
• Connection: Compression
• Body Material: Bronze
• Application: Drainage
• Country of Origin: Taiwan
• Warranty: 1 Year Limited
• MPN: BV-1004
• Lead-Free: No
• Check Mechanism: Backwater
• Installation Orientation: Horizontal
• Disc / Flapper Material: Neoprene
• Spring Material: Stainless Steel
• Normally Open: Yes