Brass NPTF Pipe Fittings Manufacturer & OEM Supplier

Machined brass plugs, nipples, adapters, elbows and tees for distributor and private-label programs.

Brass NPT and NPTF Fittings for Production Supply

Delphi Fittings manufactures brass NPT and NPTF pipe fittings in Zhejiang, China for OEM buyers, industrial distributors and private-label programs. Available configurations include plugs, nipples, couplings, adapters, elbows, tees and crosses for compatible pneumatic, instrumentation and general fluid-service systems.

Application approval is part-specific. Do not assign a pressure, temperature, potable-water, fuel-gas or chemical-service rating from the material name alone. Confirm the exact alloy, size, thread standard, mating component, medium and applicable code before ordering.

NPT and NPTF are both 60° tapered American pipe-thread families, but they are governed by different specifications and sealing assumptions. The purchase order should state NPT or NPTF explicitly rather than treating the terms as interchangeable.

Brass NPT / NPTF Fitting Catalog

Part #: B-3151 Square Head Pipe Plug, NPTF Brass Fitting
Seals a female NPTF port. Brass plug with an external square head for specific tool engagement.
Part #: B-3150 Slotted Head Pipe Plug, NPTF Brass Fitting
Seals a female NPTF port. Brass plug with a slotted head for screwdriver installation/removal.
Part #: B-3152 Hex Head Pipe Plug, NPTF Brass Fitting
Seals a female NPTF port. Brass plug with an external hex head for easy wrench tightening.
Part #: B-3326 Brass Seamless Pipe Nipple (NPTF)
Seamless brass nipple for connecting two female NPTF ports. Male NPTF threads on both ends.
Part #: B-3220 NPTF Pipe Male x NPTF Pipe Female Brass Fitting (Street)
Brass street fitting (e.g., street elbow) connecting a male NPTF thread to a female NPTF port.
Part #: B-3325 NPTF Pipe Male x NPTF Pipe Male Brass Fitting (Nipple)
Brass nipple connecting two female NPTF ports. Male NPTF threads on both ends.
Part #: B-3129 Brass Pipe Cap, NPTF Brass Fitting
Seals the end of a male NPT/NPTF threaded pipe or fitting. Brass cap with female NPTF threads.
Part #: B-3200 NPTF Female x NPTF Male Brass Fitting (Adapter)
Straight brass adapter connecting a female NPTF port to a male NPTF pipe/fitting.
Part #: B-3300 NPTF Pipe Female x NPTF Pipe Female Brass Fitting (Coupling)
Brass coupling connecting two male NPTF pipes/fittings. Female NPTF threads both ends.
Part #: B-3400 NPTF Pipe Male x NPTF Pipe Female Brass Fitting (Adapter)
Straight brass adapter connecting a male NPTF thread to a female NPTF port.
Part #: B-3700 NPTF Pipe Female Tee Brass Fitting
Brass tee connecting three male NPTF pipes/fittings. Female NPTF threads on all ends.
Part #: B-3390 NPTF Pipe Male 90° Union Elbow (Brass)
90° brass elbow connecting two female NPTF ports. Male NPTF threads on both ends.
Part #: B-3750 NPTF Pipe Female x NPTF Pipe Male Street Tee Brass Fitting
Brass street tee, typically connecting two female NPTF ports and one male NPTF pipe/fitting.
Part #: B-3600 NPTF Pipe Female x NPTF Pipe Male Branch Tee Brass Fitting
Female x male NPTF brass branch tee. Confirm branch/run orientation and each thread size on the approved drawing.
Part #: B-3950 NPTF Pipe Female Cross Brass Fitting
Brass cross connecting four male NPTF pipes/fittings. Female NPTF threads on all ends.
Part #: B-514 Brass NH Garden Hose x NPTF Male Adapter
Brass adapter connecting a standard North American Garden Hose (NH thread) to a male NPTF thread.
Part #: B-3250 NPTF Pipe Female Union Brass Fitting (Coupling)
Brass coupling (union) connecting two male NPTF pipes/fittings. Female NPTF threads both ends.

NPT vs NPTF Brass Fittings: Specification Guide

NPT and NPTF are tapered American pipe threads with a 60° profile, but the standards control different thread details. ASME B1.20.1 covers general-purpose NPT dimensions and gauging. SAE J476 defines Dryseal forms, including controlled crest and root truncation intended to create metal-to-metal contact before or with flank contact.

Thread family	Primary reference	Selection point	RFQ requirement
NPT	ASME B1.20.1	General-purpose tapered pipe thread; sealing practice depends on the complete assembly and approved sealant	State NPT explicitly, including nominal size and gender
NPTF / Dryseal	SAE J476	Controlled crest/root truncation distinguishes the Dryseal thread form	State the complete NPTF form and mating connection; do not substitute NPT by assumption
NPSM swivel mating end	Part-specific 30° seat connection	The straight thread retains the swivel while the 30° seat forms the seal	Verify that the male pipe fitting actually includes the required 30° seat

Functional Comparison with Brennan Brass Pipe Fittings

Delphi products are generally developed around Brennan-style specifications when a customer requests an equivalent. Brennan's current pipe-fitting catalog identifies brass as an available material and separates couplings, nipples, male-to-female adapters, reducer bushings and plugs by complete NPTF function. For example, Brennan 5405 is a male NPTF 30° x female NPTF adapter; its “-B” suffix identifies a brass version.

Plugs and caps: compare Delphi B-3150, B-3151, B-3152 and B-3129 by thread form, size, head/drive style, thread length and drawing dimensions.
Nipples and couplings: compare B-3325, B-3326, B-3250 and B-3300 by end gender, bore, hex or body form and overall length.
Adapters: compare B-3200 and B-3400 by complete male/female orientation and any required 30° seat—not by a short description alone.
Directional fittings: compare elbows, tees and crosses by branch/run orientation, centerline dimensions and every end size.

Brennan is a trademark of its respective owner. References are for functional identification and buyer cross-checking only; Delphi Fittings is not claiming affiliation or universal interchangeability.

Material and Application Controls

“Brass” is not a complete material specification. Alloy composition affects machinability, strength, corrosion behavior and regulatory suitability. Potable-water, fuel-gas, oxygen, refrigerant and other regulated applications require the buyer to specify the applicable alloy, certification and code requirements. Delphi does not represent every catalog item as automatically approved for those services.

Pressure and temperature: confirm ratings for the exact part, size, alloy, mating component and operating conditions.
Fluid compatibility: review the alloy and any sealant or lubricant against the actual medium and temperature.
Lead requirements: if a low-lead or lead-free alloy is required, state the governing regulation and documentation on the RFQ.
Assembly: follow the fitting, equipment and sealant manufacturers' instructions; avoid applying a generic turn count to all sizes and materials.

Minimum Information for a Brass NPTF RFQ

Delphi number, full Brennan or other competitor number, or customer drawing and revision.
NPT or NPTF designation, nominal size, gender and any 30° seat requirement for each end.
Brass alloy and required material, compliance or traceability documentation.
Operating medium, temperature, working/test pressure and applicable industry code.
Annual usage, release quantity, packaging, labeling and inspection requirements.

Primary Technical References

ASME B1.20.1 — dimensions and gauging for general-purpose inch pipe threads including NPT.
SAE J476 — Dryseal pipe-thread forms and controlled crest/root truncation.
Brennan Pipe Fittings and Port Adapters — current public product-family and material reference.
Brennan 5405 Brass Adapter — public example of a brass male NPTF 30° x female NPTF configuration.

Technical references reviewed September 6, 2026. The buyer's approved drawing and purchase-order requirements govern production.

Factory Supply for Brass NPT & NPTF Programs

Delphi Fittings supplies brass NPT and NPTF pipe fittings from Zhejiang, China for North American distributors, OEM buyers and private-label programs. We help buyers specify the tapered thread, fitting configuration and material requirement for plumbing, air, fuel and low-pressure connection applications.

Delphi controls machining, dimensional and thread verification, final inspection and export coordination for the supplied fittings. Where a forged blank is required, it is sourced from a qualified external partner. Send the part number or drawing, complete thread callouts, brass alloy, compliance requirements and quantity for review.

Request a Drawing-Based Brass Fitting Quote

This page shows common brass NPT/NPTF configurations. Send the complete connection description, drawing or cross-reference number, material specification, operating conditions and required quantity. Any low-lead or regulated-service requirement must be identified before quotation.

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