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Short black steel pipe nipple with tapered threads both ends

Value Brand

Value Brand 1/4" MNPT x MNPT Black Close Pipe Nipple Schedule 40

SKU CH-3717-SXMXP

A 1/4" black steel close nipple with MNPT threads on both ends, Schedule 40 rated for 300 psi at 150°F and 150 psi steam

  • Schedule 40 wall handles 300 psi at 150 °F
  • Electric-resistance weld gives uniform seam strength
  • Black steel resists corrosion in water lines
  • ASTM A-53 Type E and A-733 Grade B compliance
  • 1/4 inch MNPT threads fit standard fittings

1/4" Schedule 40 Black Steel Close Nipple

This 1/4 inch nominal pipe size nipple connects two female NPT fittings in a compact run. The close-thread length leaves minimal exposed pipe between components. Black steel construction suits water, oil, air and steam lines up to the rated pressures. It meets ASTM A-53 Type E and A-733 Grade B standards.

Threaded Both Ends for Inline Assembly

Male NPT threads on each end allow direct engagement with valves, couplings or equipment ports. The electric-resistance-welded seam provides a continuous wall thickness of 5/64 inch and an outside diameter of 17/32 inch. No additional pipe section is required when spacing is tight. The fitting frees up space in crowded manifolds or control panels.

Rated 300 psi at 150 °F for Sustained Service

The Schedule 40 wall withstands continuous working pressure of 300 psi at 150 degrees Fahrenheit and 150 psi saturated steam. Weld integrity and Grade B steel maintain strength under prolonged thermal cycling. Not suited for systems exceeding these pressure or temperature limits. Buyers needing higher pressure ratings or larger diameters must select a different schedule or size.

Highlights

  • Schedule 40 wall handles 300 psi at 150 °F
  • Electric-resistance weld gives uniform seam strength
  • Black steel resists corrosion in water lines
  • ASTM A-53 Type E and A-733 Grade B compliance
  • 1/4 inch MNPT threads fit standard fittings

Specifications

BrandZORO SELECT

Questions about this item

What is the maximum water pressure this 1/4 inch Schedule 40 close nipple can handle at 150 degrees F?

The fitting is rated for 300 psi at 150 degrees F, which is the limit you will reach first under sustained high-pressure use.

How hot does the steel get when carrying 150 psi steam all day?

The nipple is rated for 150 psi WSP, so it is designed to contain saturated steam at that pressure without overheating the pipe wall.

Which thread standard must my existing pipe or fitting match for this nipple to seal?

Both ends use MNPT threads per ASTM A-733, so the mating components must also be NPT tapered threads.

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