Adaptor - BSPP Male - Metric Stud Male

BSPP Male to Metric Stud Male Adaptor

BSPP (British Standard Pipe Parallel) Male

• Standard: DIN 3852-2 / ISO 1179-1
• Thread Type: Parallel
• Function: Provides clamping force; sealing occurs externally
• Common Sizes: 1/8"-28, 1/4"-19, 3/8"-19, 1/2"-14, up to 2"-11

Metric Stud Male

• Standard: DIN 3852-1 / ISO 9974-1
• Thread Type: Parallel
• Common Sizes: M10x1.0 to M52x2.0
• Function: Designed for direct installation into metric ports with sealing on the spot face

Sealing Methods

Since both BSPP and Metric Stud threads are parallel, sealing does not occur via the threads. Instead, these adaptors use:

1. O-ring with Retaining Ring

   • O-ring sits on the spot face of the port
   • Retaining ring traps the O-ring between fitting hex and port face
     
     

2. Bonded Seal (Dowty Washer)

   • Rubber O-ring bonded to a metal washer
   • Common for BSPP threads
     
     

3. Copper Washer

   • Used in high-temperature applications

1. ED Seal / P-Flex Seal

   • Elastomeric seal in a precision groove on the fitting hex
     
     

2. Cutting Face Seal

   • Metal-to-metal seal between fitting and spot face

Pressure Ratings

• Typical Pressure Range:
  • Up to 600 bar (8700 psi) depending on size and sealing method
  • Higher pressures achievable with bonded seals or ED seals