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White PVC inline ball valve with tee handle and socket FNPT connections

Spears

Spears 3629 1-1/2" Socket x FNPT PVC Ball Valve Inline

SKU CH-TBDD-EDPPW

Controls water flow with a 1-1/2 inch socket and FNPT PVC inline ball valve rated to 235 psi and 40 to 140 degrees F

  • TypeOther
  • Full-port design allows unrestricted flow through 1-1/2 inch piping
  • Safe-T-Shear stem protects valve body from handle over-torque damage
  • 235 psi CWP rating handles demanding cold-water pressure applications
  • Operates reliably from 40 to 140 degrees Fahrenheit
  • Three-piece inline body simplifies in-line maintenance and seal replacement

Spears 3629 Inline Ball Valve

The Spears 3629 is a 1-1/2 inch PVC inline ball valve with a socket and FNPT connection. It is built for plumbing systems that require a full-port, 3-piece design and a pressure rating of 235 psi CWP. The valve suits installers who need a corrosion-resistant shut-off for water lines operating between 40 and 140 degrees Fahrenheit.

Replacing Gate Valves Or Damaged Units

This valve replaces older gate valves that restrict flow or leak at the packing nut, and it upgrades worn ball valves with cracked bodies or seized stems. The jump is worth it when the system demands full-port flow and a 3-piece body that allows in-line maintenance without cutting pipe. It is not for buyers who need a union-end valve for tool-free removal or a metal-body valve for higher temperature service.

Installation Uses Solvent Cement And Thread Sealant

The socket end joins to PVC pipe with solvent cement while the FNPT end threads onto a male adapter using thread sealant. The 3-piece design lets the centre section drop out for seat or ball service. What usually goes wrong is over-tightening the FNPT joint and cracking the PVC body, or using the wrong cement for the socket connection. The Safe-T-Shear stem protects against stem blow-out if the handle is forced.

Highlights

  • Full-port design allows unrestricted flow through 1-1/2 inch piping
  • Safe-T-Shear stem protects valve body from handle over-torque damage
  • 235 psi CWP rating handles demanding cold-water pressure applications
  • Operates reliably from 40 to 140 degrees Fahrenheit
  • Three-piece inline body simplifies in-line maintenance and seal replacement

Specifications

BrandSPEARS
TypeOther

Questions about this item

Will the 1-1/2 inch socket connection fit standard Schedule 40 PVC pipe?

The 1-1/2 inch socket end is sized for standard PVC pipe diameters. Ensure the pipe is cut square and deburred before solvent welding.

How do I assemble the three-piece body without leaking, and what step is often missed?

Lubricate the EPDM body seals with compatible grease, align the carrier between end connectors, and tighten union nuts evenly. The step often missed is seat orientation — ensure the ball seats face the flow direction.

When should the EPDM seats and body seals be replaced in a 40 to 140 degree F system?

Inspect EPDM seats and body seals annually. Replace them if the handle becomes stiff, if seepage appears at the union joints, or after prolonged exposure near the 140 degree F limit.

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