Value Brand Coupling 1/2" FNPT Malleable Iron Class 150 5P552
A 1/2 inch FNPT malleable iron coupling rated Class 150 for joining pipe sections
- 1/2" FNPT connection fits standard pipe threads
- Malleable iron body provides Class 150 pressure rating
- ZORO SELECT brand ensures consistent manufacturing quality
- Female NPT threads on both ends simplify installation
- New condition guarantees full service life from day one
1/2" FNPT Malleable Iron Coupling
This Value Brand coupling joins two 1/2 inch female NPT pipe ends in plumbing systems. The malleable iron body is rated to Class 150 for standard pressure service. It provides a straight, rigid connection for water, air or gas lines.
Replaces worn or damaged threaded couplings
Install this fitting when an existing coupling leaks, cracks or no longer seals at the threads. The jump is worth it when the old fitting cannot be re-threaded or when pipe alignment requires a new straight connector.
Limited to Class 150 pressure rating and NPT threads
The fitting handles only the pressures defined by its Class 150 rating and seals with standard NPT taper threads. It does not suit higher-pressure classes, compression joints or non-NPT thread forms.
How it compares
Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.
- Price $1.10
- Cheaper than about 97% of the 2,955 comparable items (median $17.99).
Specifications
| Product | |
|---|---|
| Brand name | ZORO SELECT |
Questions about this item
What thread size and type does the 1/2" FNPT coupling require for a leak-free fit?
The coupling uses 1/2 inch Female NPT threads on both ends, so matching 1/2 inch Male NPT pipe or nipples will seal correctly with thread sealant.
How do I install this malleable iron coupling without cracking the threads?
Clean the male threads, apply PTFE tape or pipe dope, hand-tighten, then finish with a wrench one to two turns — over-tightening is the common mistake that splits the iron.
When should I plan to replace a Class 150 malleable iron coupling in a standard plumbing system?
Inspect annually for corrosion or seepage at the joint; replace if threads show rust, the body cracks, or the system pressure approaches the 150 psi rating limit.
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