Description
A 1/2″ Hex Head Plug is a solid fitting used to permanently or temporarily seal the end of a female-threaded (FPT) pipe or port. In industrial plumbing and soft wash systems, these are essential for closing off unused manifold ports or sealing pump heads during maintenance.
Key Features
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Hexagonal Head: The raised hex nut allows for easy installation and removal with a standard wrench or socket. This is far more convenient than “square head” plugs, which often require specialized tools or can be easily stripped.
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304 Stainless Steel: Provides excellent resistance to rust and corrosion. It is the industry standard for systems involving water, soaps, and Sodium Hypochlorite (bleach), ensuring the plug won’t seize due to rust inside the port.
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Class 150 (150#) Rating: Cast for durability. This rating is perfect for standard industrial pressures, suction lines, and low-to-medium pressure discharge headers.
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1/2″ MPT (Male Pipe Thread): Tapered NPT threads designed to create a tight, metal-to-metal wedge seal when tightened into a female port.
Technical Specifications
| Feature | Specification |
| Connection Size | 1/2″ MPT (Male) |
| Material | 304 Stainless Steel |
| Pressure Class | 150# (Class 150) |
| Thread Type | NPT (National Pipe Thread) |
| Head Style | External Hex |





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