PRB Series Reducing Bushing

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Regulators
Valves
Fittings
Gas Systems
Welding, Cutting & Heating Apparatus

PRB Series Reducing Bushing

Features

Made of stainless steel 316L material

Maximum operating temperature of pipe fittings is 1000℉( 537℃ )

Processed in multi spindle CNC machine to ensure accuracy in all direction

Smooth and flat threaded surface for better conducive seal and higher wear-resistant

Each fitting is marked with the thread type, for ease-of-use and avoid misconnection

Dimensions

Ordering Information

Fitting Type	Thread 1	Thread 2	Model Number	A	E	F	Preset Pressure
FNPT to NPT Thread	1/4" NPT 3/8" NPT 3/8" NPT 1/2" NPT 1/2" NPT 1/2" NPT 3/4" NPT 3/4" NPT 3/4" NPT 1" NPT 1" NPT 1" NPT 1" NPT	1/8" NPT( F ) 1/8" NPT( F ) 1/4" NPT( F ) 1/8" NPT( F ) 1/4" NPT( F ) 3/8" NPT( F ) 1/4" NPT( F ) 3/8" NPT( F ) 1/2" NPT( F ) 1/4" NPT( F ) 3/8" NPT( F ) 1/2" NPT( F ) 3/4" NPT( F )	SS-PRB-NT4-FNT2 SS-PRB-NT6-FNT2 SS-PRB-NT6-FNT4 SS-PRB-NT8-FNT2 SS-PRB-NT8-FNT4 SS-PRB-NT8-FNT6 SS-PRB-NT12-FNT4 SS-PRB-NT12-FNT6 SS-PRB-NT12-FNT8 SS-PRB-NT16-FNT4 SS-PRB-NT16-FNT6 SS-PRB-NT16-FNT8 SS-PRB-NT16-FNT12	1.06 in.( 26.9 mm ) 0.86 in.( 21.8 mm ) 1.19 in.( 30.2 mm ) 1.08 in.( 27.4 mm ) 1.08 in.( 27.4 mm ) 1.41 in.( 35.8 mm ) 1.08 in.( 27.4 mm ) 1.08 in.( 27.4 mm ) 1.63 in.( 41.4 mm ) 1.37 in.( 34.8 mm ) 1.37 in.( 34.8 mm ) 1.37 in.( 34.8 mm ) 1.85 in.( 47.0 mm )	0.28 in.( 7.1 mm ) 0.28 in.( 7.1 mm ) 0.38 in.( 9.6 mm ) 0.28 in.( 7.1 mm ) 0.45 in.( 11.4 mm ) 0.47 in.( 11.9 mm ) 0.45 in.( 11.4 mm ) 0.56 in.( 14.3 mm ) 0.62 in.( 15.7 mm ) 0.45 in.( 11.4 mm ) 0.56 in.( 14.3 mm ) 0.70 in.( 18.0 mm ) 0.88 in.( 22.4 mm )	9/16 in. 11/16 in. 3/4 in. 7/8 in. 7/8 in. 7/8 in. 1-1/16 in. 1-1/16 in. 1-1/16 in. 1-3/8 in. 1-3/8 in. 1-3/8 in. 1-3/8 in.	6500 psi ( 447 bar ) 9200 psi ( 633 bar ) 6600 psi ( 454 bar ) 12200 psi ( 840 bar ) 8300 psi ( 571 bar ) 5300 psi ( 365 bar ) 12000 psi ( 826 bar ) 8200 psi ( 564 bar ) 4900 psi ( 337 bar ) 14500 psi ( 999 bar ) 11600 psi ( 799 bar ) 8600 psi ( 592 bar ) 5300 psi ( 360 bar )
ISO Tapered Thread ( R ) to ISO Thread ( Rc )	R 1/4" R 3/8" R 1/2" R 1/2"	Rc 1/8" Rc 1/4" Rc 1/4" Rc 3/8"	SS-PRB-RT4-FRT2 SS-PRB-RT6-FRT4 SS-PRB-RT8-FRT4 SS-PRB-RT8-FRT6	1.06 in.( 26.9 mm ) 1.19 in.( 30.2 mm ) 1.08 in.( 27.4 mm ) 1.41 in.( 35.8 mm )	0.28 in.( 7.1 mm ) 0.38 in.( 9.6 mm ) 0.44 in.( 11.2 mm ) 0.47 in.( 11.9 mm )	9/16 in. 3/4 in. 7/8 in. 7/8 in.	6500 psi ( 447 bar ) 6600 psi ( 454 bar ) 8300 psi ( 571 bar ) 5300 psi ( 365 bar )