Brass Union Connectors

Handling mixed connection layouts or wall-mount conditions often results in delays due to standard connector limitations. Our Brass Union Connectors cover NPT, BSP, and metric threads, and come in bulkhead, reducer, and panel-mount types to suit varied layouts.

Union Type/Configuration

Standard Union, Bulkhead Union, Panel-Mount Union, Reducer Union

Nominal Size(s)

1/8″ – 2″ (NPT/BSP) / M6 – M50 (Metric)

Thread Type(s)

NPT, BSPT, BSPP, Metric (Parallel)

Connection Gender(s)

Male-Female (MxF), Female-Female (FxF), Male-Male (MxM)

Material Grade

C36000 (Free-Cutting Brass), CW617N (EN), C37700 (High-Strength)

Product Description

These support custom lengths, internal bore changes, and seal swaps without design overhauls. You can configure Male-Male, Female-Female, or Male-Female setups to match flow or layout constraints.

Seal Material

EPDM, Viton, PTFE, NBR (O-Ring/Gasket)

Pressure Rating

150 PSI – 1000 PSI (10.3 – 69 bar) (Seal-dependent)

Temperature Range

-65°F to 400°F (-54°C to 204°C) (Viton: up to 400°F)

Overall Assembled Length

1″ – 6″ (Bulkhead unions: +20% length)

Overall Width / Max OD

0.5″ – 3″ (Bulkhead nut included)

Internal Flow Diameter

0.15″ – 1.75″ (Reducer unions: stepped diameters)

Finish/Coating

Natural Brass, Electroless Nickel (ENP), Chrome, PTFE-Coated

Standards Compliance

ASME B16.15, ISO 228, DIN 7604, NSF/ANSI 61 (Potable Water)

Weight

0.1 lb – 3 lb (Size/material-dependent)

Bulkhead Mounting Thickness

0.06″ – 0.5″ (Panel thickness compatibility)

Flow Coefficient (Cv)

1.5 – 30.0 (Size/seal-dependent; reducers: lower Cv)

Technical Advantages

Standard unions often fall short when mixed threads, seal types, or restricted spaces come into play during setup. Our connectors work across BSPT, NPT, and metric sizes, while sealing options like PTFE and Viton help match fluid types or pressure specs. We support bore diameters from 0.15 inch to 1.75 inch, ideal for reducers where stepped flow rates are needed. Lengths vary from 1 inch to 6 inches, giving room to configure without forcing your system into rigid layouts.

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Industry Applications

Hydraulic Valve Assemblies

Connects pressure circuits where seal retention and thread compatibility must stay reliable under frequent torque cycles.

Control Panel Engineering

Enables panel-mount terminations in automated setups using reducer unions and supports bulkhead wall mounting for quick service access.

Compressed Air Lines

Links M10 to M50 brass air tubes with O-ring sealing, keeping pressure levels steady across coupling points.

Water Purifier Systems

Connects inlets and outlets with BSPP threads, using NSF-compliant brass and EPDM seals for potable water handling.

Instrumentation Skids

Allows mixed-thread unions in compact layouts, helping sensors and valves align with different pipe interfaces.

HVAC Assembly Lines

Joins cooling loops or refrigerant lines, offering low Cv variants for accurate flow throttling during thermal balancing.

Flexible Unions Built Around Your Assembly Needs

Being forced to adjust pipe runs or settle for mismatched threads can slow down line integration and inflate installation time. Our Brass Union Connectors adapt to varying line sizes, thread formats, and pressure classes, helping you build with accuracy and less compromise.

Each connector can be tuned for bore clearance, mounting thickness, or sealing conditions without long lead times or tooling charges. Whether it’s a 3-piece union for low-pressure air or a panel-mount reducer with metric threading, we support your layout from design to delivery.

Having Doubts? Our FAQ

Check all our Frequently Asked Question

Can we specify different thread types at both ends of the union connector?

Yes, we support mixed-thread configurations such as BSPT on one side and NPT or metric on the other. You can define the exact thread standard and size for each end based on your assembly. This avoids the need for additional adapters or secondary fittings.

How do you handle bulkhead unions for panels with variable thickness?

We machine the body to match your panel’s exact thickness range between 0.06 inch and 0.5 inch. We also allow tolerance control for mounting thread length and nut reach. This avoids thread exposure or loose fits after final tightening.

What is your flexibility on minimum order quantity for mixed sizes or connector types?

We allow low MOQs even if your order includes different union sizes or mixed MxF, FxF, and MxM formats. This helps reduce overstock and suits trials or phased builds. You don’t need to commit to large volumes for layout testing.

Can I get reducer unions with a specific internal bore flow control requirement?

Yes, we can customize internal bore diameters to meet flow rate targets between 0.15 and 1.75 inches. You can also define stepped or tapered profiles if flow transitions are critical. We calculate Cv values per size and seal type during the build.

How fast can you deliver connectors with special coatings like ENP or PTFE?

We offer ENP, PTFE, and chrome finishes with clear timelines based on volume and finish type. Most coated units ship within 2 to 3 weeks from final spec confirmation. We avoid delays by pre-mapping finishing slots during quote stage.

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LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

Other Locations

GENERAL ENQUIRIES

LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Components Built for Critical Performance

Engineered Products for Critical Applications

Brass Union Connectors

Union Type/Configuration

Nominal Size(s)

Thread Type(s)

Connection Gender(s)

Material Grade

Product Description

Seal Material

Pressure Rating

Temperature Range

Overall Assembled Length

Overall Width / Max OD

Internal Flow Diameter

Finish/Coating

Standards Compliance

Weight

Bulkhead Mounting Thickness

Flow Coefficient (Cv)

Technical Advantages

Let's Get Started

Industry Applications

Flexible Unions Built Around Your Assembly Needs

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Having Doubts? Our FAQ

Get Clarity with Our Manufacturing Insights

We'd love to Manufacture for you!

LOCATIONS

Registered Office

Operations Office

Other Locations

GENERAL ENQUIRIES

LOCATIONS

Registered Office

Other Locations

GENERAL ENQUIRIES

Get Your Quote Now

Brass Union Connectors

Get Latest Price

Brass Union Connectors

Get Latest Price