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Round galvanised malleable iron threaded cap 3/8 inch

Value Brand

Value Brand 3/8 in Malleable Iron Threaded Cap

SKU CH-WZS0-3XCSC

A 3/8 inch malleable iron threaded cap with galvanised finish and Class 150 rating for plumbing fittings

  • Malleable iron construction resists cracking under pressure
  • 3/8 in NPT threads fit standard plumbing connections
  • Galvanized finish protects against rust and corrosion
  • Class 150 rating handles typical residential water pressure
  • Pre-applied sealant not included for flexible installation choices

3/8 in Malleable Iron Cap

This 3/8 in nominal pipe size cap is made from malleable iron with a galvanized finish. It uses female NPT threads and carries a Class 150 pressure rating. The fitting is supplied new and ready for installation.

Suitable Uses and Limits

Plumbers and maintenance crews closing a 3/8 in NPT line will find this cap fits the thread standard. It is not intended for systems that require a different thread form, a higher pressure class or a built-in sealing washer.

Class 150 Pressure Rating

The Class 150 rating defines the maximum working pressure this malleable iron cap is designed to handle. Confirm that your piping system operates within this class before fitting the component.

Highlights

  • Malleable iron construction resists cracking under pressure
  • 3/8 in NPT threads fit standard plumbing connections
  • Galvanized finish protects against rust and corrosion
  • Class 150 rating handles typical residential water pressure
  • Pre-applied sealant not included for flexible installation choices

Specifications

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Questions about this item

Should I choose the 3/8 inch nominal pipe size cap or a different size for my plumbing project?

Select the 3/8 inch nominal pipe size cap when your piping system uses that exact diameter; the malleable iron construction and Class 150 rating suit standard low-pressure water, air or gas lines.

What does the Class 150 rating mean once the cap is installed in a real piping system?

Class 150 indicates the fitting is rated for 150 psi working pressure at ambient temperature, so it will safely seal the end of a 3/8 inch line under typical residential or light-commercial pressures.

How does the female NPT thread affect compatibility and sealing in practice?

Female NPT threads accept standard 3/8 inch male NPT pipe nipples; the taper creates a mechanical seal, and you should apply thread tape or paste during assembly for a leak-free joint.

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