Smith-Cooper
Smith-Cooper 4385012970 Brass Pipe Nipple 1-1/2" MNPT x 11" Sch 40
Brass pipe nipple with 1-1/2 inch MNPT threads and 11 inch length for Schedule 40 plumbing connections
- ColorTransparent
- 1-1/2" MNPT threads connect to standard fittings
- 11 inch length spans wider gaps in plumbing runs
- Schedule 40 wall handles typical residential pressure demands
- Brass construction resists corrosion in water supply lines
- New condition ensures clean, undamaged threads for reliable sealing
Brass Pipe Nipple for Plumbing Installations
The Smith-Cooper 4385012970 is a brass pipe nipple designed for plumbing systems requiring a 1-1/2 inch MNPT threaded connection. It serves installers and maintenance teams joining two female-threaded components in water or gas lines. The Schedule 40 wall thickness suits standard pressure requirements in residential and commercial piping.
Sustained Pressure and Corrosion Resistance
Brass construction provides reliable performance under continuous system pressure without the degradation seen in shorter test bursts. The material resists corrosion from water exposure over extended periods, maintaining seal integrity at the 11 inch length. Schedule 40 rating confirms suitability for typical operating pressures encountered in permanent installations.
Threaded Connection Limits
The MNPT threads conform to standard taper specifications, creating a seal through thread interference rather than a gasket. Proper engagement requires compatible female NPT fittings and appropriate thread sealant to prevent leakage. The 11 inch overall length fixes the centre-to-centre distance between connected components, limiting layout flexibility in tight spaces.
Highlights
- 1-1/2" MNPT threads connect to standard fittings
- 11 inch length spans wider gaps in plumbing runs
- Schedule 40 wall handles typical residential pressure demands
- Brass construction resists corrosion in water supply lines
- New condition ensures clean, undamaged threads for reliable sealing
Specifications
| Color | Transparent |
|---|---|
| Brand | SMITH-COOPER |
Questions about this item
Does the 11-inch brass nipple run hot or make noise when water flows through it all day?
A solid brass pipe nipple has no moving parts and generates no heat or noise during continuous water flow.
What thread sealant or fittings must I already have to install this 1-1/2 inch MNPT nipple?
You need compatible 1-1/2 inch FNPT fittings and pipe-thread sealant or tape rated for brass connections.
Will this Schedule 40 brass nipple thread onto older galvanised or copper pipe with 1-1/2 inch NPT ends?
Yes, the MNPT threads follow the same NPT standard used on legacy galvanised and copper pipe of matching size.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
Taylor Made 12" x 18" Jolly Roger Novelty Flag 1818 marine electronic
- Accessories



