Anvil
Anvil 0318901568 1/2" MNPT Malleable Iron Square Head Plug
1/2" MNPT malleable iron square head plug rated to 285 psi and -20 to 350 °F for Schedule 40 and 80 pipe
- TypeDrain Components
- MaterialHAWA
- Malleable iron construction withstands 285 psi operating pressure
- Threaded MNPT connection fits Schedule 40 and Schedule 80 pipe
- Square head drive enables positive wrench engagement
- Temperature rated from -20°F to 350°F for broad service range
- Solid plug design provides reliable closure without pre-applied sealant
Anvil 1/2" Malleable Iron Square Head Plug
This new Anvil 0318901568 plug is a solid malleable iron fitting designed to close a 1/2 inch MNPT threaded opening in plumbing systems. It meets ASTM A197 standards and suits Schedule 40 or Schedule 80 pipe installations. The black finish indicates standard iron construction without additional coating.
285 psi maximum operating pressure
The plug withstands up to 285 psi, making the pressure rating the primary specification for selecting this part. It operates across a temperature range of -20 Degrees to 350 Degrees F. The square drive style allows installation with a standard wrench. No pre-applied thread sealant is included.
No sealant or seal included
The product ships without pre-applied thread sealant or an integrated seal, so the installer must supply compatible pipe thread compound or tape separately. This means the accessory kit does not change the sealing method; the buyer provides the sealing materials required for the specific application.
Highlights
- Malleable iron construction withstands 285 psi operating pressure
- Threaded MNPT connection fits Schedule 40 and Schedule 80 pipe
- Square head drive enables positive wrench engagement
- Temperature rated from -20°F to 350°F for broad service range
- Solid plug design provides reliable closure without pre-applied sealant
Specifications
| Type | Drain Components |
|---|---|
| Material | HAWA |
| Brand | Anvil |
| Model | 0318901568 |
Questions about this item
What does the 285 psi rating mean once the plug is installed in a pipe?
The plug will hold up to 285 psi of internal pressure at working temperature.
What does the 1/2" MNPT thread standard determine in practice?
It mates with a 1/2 inch female NPT fitting and seals on the tapered threads.
What does the square head require for installation or removal?
A wrench or socket that fits the square drive provides the leverage to tighten or loosen the plug.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
Taylor 70204 Acrylic Coated Polyester Gray Hot Shot BoatGuard Boat Cover
- Transparent
BoatBuckle F12071 Kwik-Lok Gunwale Tie-Down Stainless Steel
- Transparent



