Union

Bulk Head Union

Application Industries

Bulk Head Union

A Bulkhead Union is a precision-engineered instrumentation tube fitting designed to securely connect two tubes of the same outside diameter (OD) through a panel, bulkhead, enclosure, or equipment wall while maintaining a leak-proof and vibration-resistant connection. It features compression tube ends on both sides and a bulkhead body with a lock nut, allowing the fitting to be firmly mounted through a partition without compromising system integrity.

Bulkhead Unions are widely used in hydraulic, pneumatic, and instrumentation systems where tubing must pass safely through control panels, cabinets, manifolds, tanks, or machine enclosures. The bulkhead mounting design provides excellent mechanical support to the tubing while ensuring easy installation, maintenance, and long-term reliability. Its double ferrule compression mechanism offers superior sealing performance, making it suitable for high-pressure and high-temperature applications.

Manufactured from premium-quality raw materials using advanced CNC machining technology, our Bulkhead Unions deliver exceptional dimensional accuracy, outstanding corrosion resistance, high mechanical strength, and reliable sealing performance. Every fitting is manufactured in compliance with international standards and undergoes rigorous quality inspections to ensure dependable operation in demanding industrial environments.

Specification Sheet

Technical Specifications

Grade
Material Grade
S.S. S.S. 304, S.S. 304L, S.S. 316, S.S. 316L, S.S. 310, S.S. 321, S.S. 347
DUPLEX S32205, S31803, S32304, S32202
MONEL MONEL 400, MONEL K-500
INCONEL INCONEL 600, INCONEL 625, INCONEL 800, INCONEL 825
HASTELLOY HASTELLOY C-276, HASTELLOY C-22
Size 24" to 96" or custom
Pressure Rating
  • 3000 PSI Instrumentation Fittings
  • 6000 PSI Instrumentation Fittings
  • 10000 PSI Instrumentation Fittings
  • 15000 PSI Instrumentation Fittings
  • 20000 PSI Instrumentation Fittings
Threads
  • NPT (ASME B1.20.1, MILL-P-71058)
  • ISO Parallel - BSPP (BS 2779, ISO 228, JIS B 0202)
  • ISO Tapered - BSPT (BS 21, ISO 7, JIS B 0203)
  • ISO / BSP (Gauge) (ISO 228, BS 2779)
Features
  • Easy to disconnect and retighten.
  • Available in wide configurations
  • Various Sizes
  • Best choice for instrumentations, process & control systems
  • Zero leakage even under tough working conditions
  • Gaugeable Bodies
  • Excellent gas-tight seal
  • Leak-proof joints capable of satisfying high pressure vacuum and vibration application
Specification ASTM/ASME A/SA A182, A193, A194, A167, A213, A240, A249, A269, A270, A276, A264, A271, A312, A313, A314, A320, A336, A358, A368, A376, A403, A851, A826, A831, A895, A908, A409, A430, A473, A478, A479, A492, A493, A582, A632, A666, A688, A774, A793, A480, A519, A554, A580, A511, A581, A778, A813, A814, A943, A965, A988, A924, A903 etc.