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Hexagonal malleable iron coupling, dark grey finish, female NPT threads both ends

Value Brand

Value Brand 5P550 Coupling 1/4" FNPT Malleable Iron Class 150

SKU CH-CTEV-5ZRY9

A 1/4-inch FNPT malleable-iron coupling rated Class 150 for joining threaded pipe

  • 1/4" FNPT female threads connect pipes securely
  • Class 150 malleable iron withstands 150 psi pressure rating
  • ZORO SELECT brand ensures consistent manufacturing quality
  • New condition guarantees clean undamaged threads for installation
  • Standard NPT threading fits common 1/4 inch pipe systems

1/4" Malleable Iron Coupling

This ZORO SELECT Class 150 coupling joins two sections of 1/4 inch FNPT pipe in residential and light commercial plumbing systems. It is manufactured from malleable iron for mechanical strength and threaded to NPT standards. The fitting is supplied new and suits installers who need a reliable female-to-female connection.

Threaded fit for NPT pipe networks

The coupling accepts 1/4 inch male NPT threads on both ends, allowing it to bridge existing pipe runs without adapters. Its Class 150 rating matches standard low-pressure water, air and gas lines. The iron body resists deformation during assembly and supports the joint without additional reinforcement.

Consistent sealing under pressure cycling

Malleable iron maintains thread integrity when the system pressurises and depressurises repeatedly, reducing the risk of leaks at the joint faces. The material absorbs vibration from pumps or compressors without cracking. This coupling is not intended for high-pressure hydraulic circuits or applications that exceed the Class 150 service envelope.

Highlights

  • 1/4" FNPT female threads connect pipes securely
  • Class 150 malleable iron withstands 150 psi pressure rating
  • ZORO SELECT brand ensures consistent manufacturing quality
  • New condition guarantees clean undamaged threads for installation
  • Standard NPT threading fits common 1/4 inch pipe systems

Specifications

BrandZORO SELECT

Questions about this item

What is the pressure class of the 5P550 coupling?

The coupling is rated Class 150, which defines the maximum working pressure for malleable iron fittings of this size.

Does the malleable iron coupling generate heat or noise during continuous operation?

As a passive pipe fitting it has no moving parts, so it produces no noise and no heat under normal plumbing use.

What pipe threads are needed to install this 1/4 inch FNPT coupling?

Both ends require 1/4 inch male NPT threads to make a secure connection.

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