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White PVC backwater valve, six inch socket connection, fifteen inch body length

Spears

Spears S675P 6 in PVC backwater valve 120°F 43 psi

SKU CH-QD6R-Z4MME

A 6-inch PVC backwater valve rated for 120 °F and 43 psi, meeting ASME/ANSI A 112.14.1, ASTM 3034 and ASTM D 2665 standards

  • TypeOther
  • Prevents reverse flow with ASME/ANSI A 112.14.1 compliance
  • Handles hot water up to 120 degrees Fahrenheit safely
  • Withstands system pressure of 43 psi reliably
  • Fits 6-inch PVC piping via socket connection directly
  • Durable PVC body and stem resist corrosion long-term

Spears S675P 6 in PVC Backwater Valve

The Spears S675P is a 6 inch PVC backwater valve designed to prevent reverse flow in drainage systems. It uses a socket connection for direct solvent-weld installation into 6 inch PVC piping. The valve body and stem are both PVC, and it meets ASME/ANSI A112.14.1, ASTM D3034 and ASTM D2665 standards.

Suitable installations and limits

This valve fits gravity drainage lines where the fluid temperature stays at or below 120 Degrees F and the water pressure does not exceed 43 psi. It is not for pressurised supply lines, hot water recirculation loops or systems that operate above the stated temperature or pressure limits.

Deciding specification: 6 inch pipe size

The single specification that determines fit is the 6 inch pipe size with a socket connection. The overall inlet-to-outlet length is 15 3/8 in, so confirm that your piping layout can accommodate this dimension before purchase.

Highlights

  • Prevents reverse flow with ASME/ANSI A 112.14.1 compliance
  • Handles hot water up to 120 degrees Fahrenheit safely
  • Withstands system pressure of 43 psi reliably
  • Fits 6-inch PVC piping via socket connection directly
  • Durable PVC body and stem resist corrosion long-term

Specifications

BrandSPEARS
TypeOther

Questions about this item

How much horizontal run does the 6-inch Spears S675P valve need for a straight socket connection?

The valve body measures 15 3/8 inches from inlet to outlet, so allow at least that much clear pipe run plus the socket depth on each end.

What is the common mistake when solvent-welding this PVC backwater valve into a DWV line?

Installers often forget to orient the access cap upstream; the valve must face the flow direction marked on the body or it will not seal against backflow.

Which internal part of the Spears S675P is most likely to need replacement after several years of service?

The PVC flapper and its hinge pin see the most wear; both are user-replaceable through the top access cap without cutting the valve out of the line.

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