We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Dayton spring check valve PVC body inline FIPT connections 4.5938 in overall length

Dayton

Dayton 4RG65 Spring Check Valve 4.5938 in

SKU CH-5YVC-9ZKEP MPN 4RG65

A 3/4 inch inline spring check valve with PVC body and stainless steel spring for general purpose plumbing, 4.5938 inches long

  • TypeDrain Components
  • Prevents backflow with inline spring mechanism
  • PVC body handles 120 °F maximum temperature
  • Stainless steel spring resists corrosion
  • 3/4 in FIPT connections for standard piping
  • 4 19/32 in overall length fits tight spaces

Spring Check Valve for General-Purpose Flow

The Dayton 4RG65 is an inline spring check valve designed for general-purpose fluid control in plumbing systems. It uses a PVC body with stainless steel spring components to prevent backflow in horizontal or vertical pipe runs. The valve suits installers who need a compact, corrosion-resistant component for low-pressure water or air lines.

Temperature and Pressure Limits of PVC Construction

The PVC body restricts continuous service to a maximum temperature of 120 degrees Fahrenheit. The valve carries no steam pressure rating, so it must not be used in steam lines or high-temperature condensate returns. Operating above the stated temperature limit can deform the body and cause seal failure.

Three-Quarter Inch FIPT Connection Size

The valve connects via 3/4 inch female iron pipe threads on both inlet and outlet ports. This thread size determines direct compatibility with existing pipe nipples, fittings or equipment; mismatched threads will require adapters that add length and potential leak paths. Verify the mating thread specification before purchase.

Highlights

  • Prevents backflow with inline spring mechanism
  • PVC body handles 120 °F maximum temperature
  • Stainless steel spring resists corrosion
  • 3/4 in FIPT connections for standard piping
  • 4 19/32 in overall length fits tight spaces

Specifications

TypeDrain Components
BrandDayton
Model4RG65

Questions about this item

Should I choose the 3/4 inch FIPT version or look for a different size?

The 3/4 inch FIPT x FIPT connection matches standard residential plumbing threads; select it when your piping uses the same size and thread type.

What does the 120 degree Fahrenheit temperature limit mean for my hot water line?

It caps the valve at 120 degrees Fahrenheit, so it suits typical domestic hot water but not boiler or steam circuits that run hotter.

How does the FIPT x FIPT thread standard affect installation on my existing pipe?

FIPT threads are female iron pipe taper; you need male-threaded pipe or adapters of the same 3/4 inch size to seal properly.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.