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Bulkhead Reducing Union

Truelok Ordering Number	T Tube O.D.	Tx Tube O.D.	A	Ax	C	D	E Minimum Opening	F Hex Flat	H	Hx
	inch	inch	inch	inch	inch	inch	inch	inch	inch	inch
RBU-250-125	1/4	1/8	2.17	1.32	0.50	0.60	0.19	5/8	1.74	1.03
RBU-375-250	3/8	1/4	2.39	1.45	0.60	0.66	0.19	3/4	1.81	1.16
RBU-500-250	1/2	1/4	2.63	1.65	0.60	0.90	0.19	15/16	1.94	1.25
RBU-500-375	1/2	3/8	2.71	1.66	0.60	0.90	0.19	15/16	2.00	1.25

Material:
Truelok standard Compression Tube Fittings Bulkhead Reducing Unions are manufactured by using SS316 Bar Stock in accodance with ASTM A-479 and SS316 Forging in accordance with ASTM A-182. Fittings in other materials are available at customer's request.

Operating Temperature:
Truelok Compression Tube Fittings Bulkhead Reducing Unions provide safe and reliable performance from cyrogenic temperature to high temperature upto 380 °C.

Working Pressure:
The maximum working pressure of standard Compression Tube Fittings Reducing Union when used in conjunction with annealed SS316 seamless tubing per ASTM A-213 or equivalent is shown below:

Tube O.D. (inch)	Wall Thickness (inch)
Tube O.D. (inch)	0.020	0.028	0.035	0.049	0.065	0.083
1/8"	6863	9967	12641
1/4"		4600	5891	8602	11688
3/8"			3777	5460	7571
1/2"			2768	3976	5423	7162