We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black steel pipe nipple, 3 inch by 7 inch, Schedule 40

Legend Valve

Legend Valve 355-211E 3" x 7" Black Nipple Schedule 40

SKU CH-40JM-4MVZT

A 3" x 7" Schedule 40 black nipple for industrial plumbing connections

  • Schedule 40 rating supports standard industrial pressure requirements
  • 3-inch diameter fits matching pipework dimensions
  • 7-inch length suits common connection spacing
  • Black steel construction resists corrosion in typical installations
  • Proposition 65 notice informs safe handling practices

Industrial Plumbing Nipple

The Legend Valve 355-211E is a Schedule 40 black steel nipple measuring 3 inches by 7 inches. It is designed for industrial piping systems requiring a durable threaded connection. The component suits maintenance engineers and pipefitters working on high-pressure fluid or gas lines.

California Proposition 65 Compliance

The product carries a California Proposition 65 warning for exposure to chemicals known to cause cancer and birth defects or other reproductive harm. This regulatory notice does not alter the mechanical function of the nipple but requires safe handling practices during installation and disposal. Users must follow local safety guidelines.

Threaded Installation Notes

Installation relies on standard pipe threads compatible with Schedule 40 fittings. Proper thread sealant or tape is essential to prevent leaks at the joints. Over-tightening can damage threads or crack the fitting, while under-tightening leads to seepage under pressure. Always inspect threads for debris before assembly.

Highlights

  • Schedule 40 rating supports standard industrial pressure requirements
  • 3-inch diameter fits matching pipework dimensions
  • 7-inch length suits common connection spacing
  • Black steel construction resists corrosion in typical installations
  • Proposition 65 notice informs safe handling practices

Specifications

BrandLEGEND VALVE

Questions about this item

Will the Schedule 40 black nipple need replacement due to corrosion or wear over time?

As a Schedule 40 black steel nipple, it will eventually require replacement if corrosion develops from water chemistry or environmental exposure; regular inspection for rust or leaks determines the timeline.

What pressure limit applies to this 3-inch Schedule 40 nipple under continuous service?

The Schedule 40 rating defines the maximum working pressure for this 3-inch diameter pipe nipple; sustained operation must stay within that pressure class to avoid failure.

Does the black steel nipple generate heat or noise when fluid flows through it all day?

The nipple itself produces no noise or heat; any sound or temperature change comes from the fluid moving through the plumbing system, not from the fitting.

More in Industrial Plumbing Tools & Equipment

Similar items

Same shelf, same checkout — eight coins and a 30-minute rate lock.