BSPP & BSPT Thread Identification Table
BSP – BRITISH STANDARD PIPE
BSPT – BRITISH STANDARD PIPE TAPER DIN 3852-1+2
BSPP – BRITISH STANDARD PIPE PARALLEL ISO 1179-1,DIN 3852 T2
|Thread Size –
|usa||Size – TPI||mm||Inch||mm||Inch||mm||Inch||mm||Inch|
|-2||1/8″ – 28||9.59||0.38||8.6||0.34||9.51||0.37||8.49||0.33|
|-4||1/4″ – 19||13.01||0.51||11.9||0.47||12.78||0.5||11.19||0.44|
|-6||3/8″ – 19||16.49||0.65||15.2||0.6||16.31||0.64||14.68||0.59|
|-8||1/2″ – 14||20.79||0.82||19.1||0.75||20.39||0.8||18.32||0.72|
|-10||5/8″ – 14||22.81||0.9||20.8||0.82||22.51||0.89||20.59||0.81|
|-12||3/4″ – 14||26.31||1.04||24.6||0.97||25.91||1.02||23.91||0.94|
|-16||1″ – 11||33.09||1.3||30.7||1.21||32.59||1.28||29.71||1.17|
|-20||1.1/4″ – 11||41.79||1.64||39.4||1.55||41.09||1.62||38.59||1.52|
|-24||1.1/2″ – 11||47.69||1.88||45.5||1.79||47.01||1.85||44.49||1.75|
|-32||2″ – 11||59.51||2.34||57.4||2.26||58.6||2.31||56.39||2.22|
* Thread size refers to the nominal bore of the pipe.
Subtract approx. 1/4″ (6mm) from thread diameter measurement for nominal pipe size.
BSPP : BSPP male with conical 30° seat (60° included angle) seal against matching conical 30° seat of BSPP female swivel.
BSPP – Form B – Seals using a metal to Metal sealing Edge.
BSPP – Form E – Seals using a Elastomer Seal (Volz WD Seal)
BSPP – Form B can also be used with Captive O-rings or Encapsulated Seals for Chamfered Female Ports or for your preference.
BSPP Positional Elbows and tees have Lock Nut and O ring to allow orientation of fitting to required direction.
BSPT : BSPT male threads seal against threads of a fixed BSPT female.
Contact is made on the flanks of the threads.
Use of Volz thread sealant or Thread Lubricant is recommended for BSPT male to BSPT female connections.
Compatability: Please ring for more information about interchangeability