PP Brass Inserts

Q: How do PP brass inserts differ from standard CPVC or PPR inserts?

PP brass inserts are engineered with specialized thermal expansion compensation collars and aggressive diamond knurling depths specifically calibrated for the shrinkage rates and elastic modulus of polypropylene polymers during injection molding.

Q: Are PMI PP brass inserts safe for drinking water applications?

Yes. Our PP brass inserts can be manufactured from CW617N or certified lead-free ECO brass (<0.1% Pb) compliant with NSF/ANSI 61 and European drinking water regulations, preventing toxic metal leaching.

Q: What torque levels can PP brass inserts withstand without spinning?

Thanks to deep undercut locking grooves and broached hexagonal shoulders, our PP inserts withstand tightening torques exceeding 100 Nm, eliminating joint slippage during on-site pipe installation.

PP Brass Inserts Manufacturer in India - Precious Metal Industries

Supplier of PP Brass Inserts

We are the leading PP Brass Inserts manufacturer in India. Specifically engineered for polypropylene (PP, PP-H, PP-R) injection-molded fittings, valves, and manifold networks, our brass inserts provide robust, leak-proof metallic threads and eliminate stripping under high tightening torques.

Features of PP Brass Inserts

The features of the PP Brass Inserts are stated below:

Superior quality
Available in different sizes
Have accurate dimension
Stronger in nature
Easy customization
Smooth exterior surface finish
Available at a user friendly price

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Technical Specifications of PP Brass Inserts

Precious Metal Industries manufactures high-precision turned components to strict ISO 9001:2015 standards with micrometer optical verification:

ng diameters; Thread standard 6H

Parameter	Standard Specification	Custom Options Available
Nominal Fitting Sizes	1/2", 3/4", 1", 1-1/4", 1-1/2", 2" (DN15 to DN50)	Custom metric diameters up to 4" (DN110) per drawing
Thread Types	Female (Parallel BSPP ISO 228), Male (Tapered BSPT ISO 7, NPT ANSI B1.20.1)	Metric ISO 6H, UNC/UNF American threads
Material Grades	CW617N (CuZn40Pb2), CW614N (CuZn39Pb3), C36000 Free-Cutting Brass	Lead-Free Brass (<0.1% Pb), DZR Dezincification Resistant (CW602N)
Knurling Profiles	Deep Diamond Knurl, Straight Longitudinal Ribs, Hex Collars	Aggressive cross-hatched grooves for high-shrink PP resin
Dimensional Tolerance	High-precision CNC micrometer turning down to ±0.01 mm
Pressure & Temperature	Continuous working pressure up to PN25 (25 bar), temp up to 95°C	High-pressure industrial and hydraulic piping variants
Surface Finishing	Natural Clean Degreased Brass, Nickel Plated, Chrome Plated	Electro-tin plated, ultrasonic acid-cleaned finish

Have Custom PP Brass Insert Drawings?

Submit your 2D PDF or 3D STEP/IGES CAD drawings for rapid DFM analysis, tolerance feasibility, and factory quotation within 24 hours.

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PP Brass Inserts Product Range

Female Threaded PP Insert

Male Threaded PP Insert

Hex Collar PP Insert

Diamond Knurl PP Insert

Got Questions?

Frequently Asked Questions – PP Brass Inserts

1 How do PP brass inserts differ from standard CPVC or PPR inserts?