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Watts BV-1004 stainless steel backwater valve, round black finish, 3 7/8 inch diameter

Watts

Watts BV-1004 Internal Backwater Valve 4 in

SKU CH-NBH1-75GC3

Prevents sewage backflow in floor drains with a stainless-steel spring-loaded float and neoprene seal, meeting ASME A 112.14.1 and UPC standards

  • TypeDrain Components
  • Prevents sewage backflow with stainless steel spring closure
  • Meets ASME A112.14.1, UPC and IPC standards
  • Bronze compression plates and neoprene gasket ensure tight seal
  • Includes mounting bolts for direct floor drain installation
  • Durable stainless steel body resists corrosion in drainage systems

Watts BV-1004 Backwater Valve

The Watts BV-1004 is a new internal backwater valve designed for 4 inch pipe diameter floor drains. It features a round stainless steel body with bronze compression plates, a neoprene gasket, a sealing float and a stainless steel light tension closure spring. The unit includes mounting bolts and meets ASME A 112.14.1, UPC and IPC standards. It prevents reverse flow in drainage systems.

Suitable Installations and Limitations

This valve suits plumbers and contractors installing backflow prevention in compatible floor drains requiring a 4 inch connection. It is not for buyers who need a different pipe diameter, an external valve configuration or a valve without the specified stainless steel spring and bronze plate assembly. The included bolts fit the standard mounting pattern for this model.

Critical Sizing Specification

The decisive specification is the 4 inch pipe diameter designation for the drain connection. The overall diameter measures 3 7/8 inches to fit inside the pipe. Verify the existing drain pipe size and internal dimensions match this requirement before purchase to ensure proper seating and sealing.

Highlights

  • Prevents sewage backflow with stainless steel spring closure
  • Meets ASME A112.14.1, UPC and IPC standards
  • Bronze compression plates and neoprene gasket ensure tight seal
  • Includes mounting bolts for direct floor drain installation
  • Durable stainless steel body resists corrosion in drainage systems

Specifications

TypeDrain Components
BrandWatts
ModelBV-1004

Questions about this item

What size floor drain opening does the BV-1004 backwater valve fit?

The valve has an overall diameter of 3 7/8 inches and is designed for a 4 inch pipe diameter, so it installs inside a standard 4 inch floor drain body.

Can the BV-1004 be used with existing cast iron or PVC drain piping?

Yes, the bronze compression plates and neoprene gasket create a seal against both cast iron and PVC pipe interiors without requiring special adapters.

How can I verify the BV-1004 is sealing properly after installation?

Pour water into the floor drain; the stainless steel float should rise and the light tension spring should close the gate, stopping backflow while allowing normal drainage.

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