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White PVC inline swing check valve with solvent weld connections, two-inch size

Zoeller

Zoeller 30-0048 Silent Combo Swing Check Valve 2in trap

SKU CH-M4Q3-47TZE MPN 30-0048

A 2-inch PVC swing check valve with solvent-weld connections that operates horizontally or vertically and reduces pump noise

  • TypeDrain Components
  • MaterialPVC
  • Silent operation reduces noise with inline swing mechanism
  • Full flow design maintains pump efficiency without restriction
  • PVC body with rubber seal handles 130 degrees Fahrenheit
  • Solvent weld connections allow horizontal or vertical mounting
  • Spring-loaded stainless steel ensures reliable closure at 50 psi

Silent Combo Swing Check Valve

The Zoeller 30-0048 is a PVC inline swing check valve designed for pump discharge lines in residential and light-commercial plumbing systems. It accepts solvent-weld connections on both ends and can be mounted horizontally or vertically to suit the piping layout. The rubber seal and stainless-steel spring provide a positive shut-off that stops back-flow when the pump cycles off.

Replaces noisy or leaking swing checks

This unit upgrades an existing 2 in check valve that chatters, fails to seal or restricts flow during high-volume discharge. The full-flow body reduces head loss compared with reduced-port designs, making the swap worthwhile when the current valve causes pump short-cycling or water-hammer noise. It is not intended for steam service or for pressures above the rated limit.

Sustained load behaviour

Under continuous pump operation the valve remains fully open, allowing unrestricted flow at up to 50 psi and 130 Degrees F. The PVC body and rubber seat resist corrosion from typical effluent, while the stainless-steel spring maintains consistent closing force over repeated cycles. California Proposition 65 warnings apply to chemicals in the product materials.

Highlights

  • Silent operation reduces noise with inline swing mechanism
  • Full flow design maintains pump efficiency without restriction
  • PVC body with rubber seal handles 130 degrees Fahrenheit
  • Solvent weld connections allow horizontal or vertical mounting
  • Spring-loaded stainless steel ensures reliable closure at 50 psi

Specifications

TypeDrain Components
MaterialPVC
BrandZoeller
Model30-0048

Questions about this item

What pipe size and connection type does the 2in trap valve require?

The valve fits a 2-inch pipe with solvent-weld connections on both ends.

How do I orient the valve during installation and what is the common mistake?

Install horizontally or vertically with the flow arrow pointing downstream; the common error is reversing the arrow direction.

When should the rubber seal or stainless-steel spring be inspected or replaced?

Inspect the rubber seal and stainless-steel spring annually or if flow noise increases, and replace if wear or corrosion appears.

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