Value Brand Malleable Iron Union 1/4" NPT Class 150
Malleable iron union connects 1/4" NPT pipes at Class 150 pressure rating
- Malleable iron construction withstands demanding plumbing applications
- Class 150 rating handles standard pressure requirements
- 1/4 inch NPT female threads connect to matching pipe sizes
- Galvanised finish resists corrosion in wet environments
- ZORO SELECT brand identifies the manufacturer of this union
1/4" NPT Malleable Iron Union
This ZORO SELECT union joins two 1/4 inch NPT female threads in a galvanised malleable iron body. It is rated to Class 150 for standard pressure service. The fitting suits plumbing repairs and low-pressure fluid lines where a separable joint is required.
Behaviour under sustained pressure
The galvanised coating resists corrosion during long-term exposure to water or air lines. Malleable iron construction handles repeated thermal cycling without cracking. The ground joint seal maintains integrity when the system remains pressurised for extended periods.
Class 150 pressure rating
Class 150 defines the maximum working pressure for this fitting at ambient temperature. Installers must verify that the system design pressure does not exceed this rating. Buyers needing higher pressure containment must select a different class of union.
How it compares
Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.
- Price $6.99
- Cheaper than about 78% of the 2,955 comparable items (median $17.99).
Specifications
| Product | |
|---|---|
| Brand name | ZORO SELECT |
Questions about this item
Does the 1/4" NPT malleable iron union generate noise or heat when installed in a continuously running line?
No, the fitting has no moving parts and creates no noise or heat during operation.
What pipe thread sealant or tape is required for the 1/4" NPT connections to seal properly?
Standard PTFE tape or pipe dope compatible with malleable iron and galvanized surfaces is needed for each joint.
Will the Class 150 rating of this union match the pressure class of older galvanized pipe already in the system?
Yes, Class 150 is the standard pressure rating for traditional galvanized malleable iron piping systems.
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