Value Brand
Value Brand 1/4 x 1/8 MNPT x FNPT 316 SS Hex Reducing Bushing
316 stainless steel hex reducing bushing connects 1/4 in MNPT to 1/8 in FNPT, rated 3000 psi at 100 °F and 2500 psi steam at 350 °F
- 316 stainless steel resists corrosion in harsh fluids
- Class 3000 rating handles 3000 psi at 100 degrees F
- MNPT to FNPT threads connect different pipe sizes
- ASTM A182 material standard ensures consistent alloy quality
- ASME B16.11 compliance confirms dimensional accuracy for threaded fittings
316 Stainless Steel Hex Reducing Bushing
This hex reducing bushing connects a 1/4 inch male NPT thread to a 1/8 inch female NPT thread. It is machined from 316 stainless steel for corrosion resistance in fluid and gas systems. The fitting suits industrial, marine and process piping applications where a durable reduction is required. It meets material standard ASTM A182 and threading standard ANSI/ASME B1.20.1.
Installation and common issues
Thread the male end into the female port using a wrench on the hex flats; apply PTFE tape or pipe sealant rated for the system pressure. Over-tightening can distort threads or crack the fitting, especially on the smaller 1/8 inch side. Ensure the sealant is compatible with the media and temperature to prevent leaks at the joint. Misaligned threads are the most frequent cause of weeping connections.
Compatibility checks before ordering
Verify that the mating ports are NPT threads to ANSI/ASME B1.20.1 so the taper engages correctly. Confirm the system design pressure does not exceed 3000 psi at 100 degrees F or 2500 psi steam pressure at 350 degrees F. Check that 316 stainless steel is suitable for the fluid chemistry to avoid galvanic corrosion. The fitting is Class 3000 rated per ASME B16.11 for the intended service.
Highlights
- 316 stainless steel resists corrosion in harsh fluids
- Class 3000 rating handles 3000 psi at 100 degrees F
- MNPT to FNPT threads connect different pipe sizes
- ASTM A182 material standard ensures consistent alloy quality
- ASME B16.11 compliance confirms dimensional accuracy for threaded fittings
Specifications
| Brand | ZORO SELECT |
|---|
Questions about this item
How do I confirm the bushing is sealing correctly after installation?
Pressurise the line up to 3000 psi at 100 °F or 2500 psi steam at 350 °F and check for leaks at the MNPT and FNPT threads.
What comes with the bushing and what must I supply?
The box contains only the 316 stainless steel hex reducing bushing; thread sealant or tape and mating pipe nipples are not included.
Which fitting class matches a 3000 psi requirement?
Choose the Class 3000 version, rated for 3000 psi at 100 °F and compliant with ASTM A182 and ASME B16.11.
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