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Hexagonal malleable iron pipe coupling with threaded ends

Value Brand

Value Brand Malleable Iron Coupling Class 300 1 in FNPT

SKU CH-9PS2-BTMX1

Connects 1 in FNPT piping, rated 2000 psi at 150 °F and 300 psi steam with -20 to 550 °F range

  • Rated for 2000 psi at 150 °F working pressure
  • Handles saturated steam up to 300 psi service
  • Operates from -20 °F to 550 °F temperature range
  • Meets ASME B16.3, B16.4 and ASTM A197, A47 standards
  • FM Approved and UL Listed for code compliance

Malleable Iron Coupling 1 in FNPT

This malleable iron coupling connects two 1 inch pipes with female NPT threads. It is built to Class 300 specifications for demanding plumbing installations. The fitting meets ASME B 16.3 and B 16.4 standards as well as ASTM A 197 and ASTM A 47. It carries FM Approved and UL Listed certifications.

Upgrade from Class 150 fittings

A Class 300 coupling replaces lighter Class 150 components when system pressure demands a stronger joint. The jump is worth it when operating pressures approach 2000 psi at 150 degrees F. It also handles saturated steam pressure up to 300 psi. The temperature range spans -20 degrees to 550 degrees F.

Verify thread type and pressure rating

Confirm that the existing piping uses female NPT threads before ordering. Ensure the system design pressure does not exceed the rated maximum for the fitting class. Check that the temperature range matches the intended service conditions. Verify material compatibility with the fluid being conveyed.

How it compares

Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $6.99
Cheaper than about 78% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameZORO SELECT

Questions about this item

What pipe size and thread type does this Class 300 malleable iron coupling accept?

It connects 1 in FNPT threaded pipe ends for a straight inline joint.

Which sealing method should I use when threading this coupling onto pipe?

Apply PTFE tape or pipe thread sealant on the male threads; over-tightening can crack the iron casting.

How often should I inspect this coupling for corrosion or leakage?

Check joints at each system shutdown or annually; replace if rust, cracks or weeping appear at the threads.

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