• Wide range of pipes
• Transfer Oil at high pressure

Maximum working pressure 300 MPa (43,500 psi)

The range of SKF high pressure pipes covers most applications where there is a requirement to transfer oil at high pressure. They consist of a steel pipe with a steel ball fitted to both ends. Two swiveling connection nipples press these balls against the seating of the connecting hole and thus sealing against oil leakage.

• Wide range of pipes
• All pipes are pressure tested to 100 MPa (14,500 psi) over recommended working pressure
• Special lengths (up to 4 m / 157 in) made on request 400 MPa versions available
• Note: For safety reasons these high pressure pipes have a maximum recommended service life of 5 years.

Technical specifications

• Maximum working pressure : 300 MPa (43,500 psi)
• Test pressure : 400 MPa (58,000 psi)
• Test quantity : 100%
• Outer pipe diameter : 4 mm (0.16 in)
• Inner pipe diameter : 2 mm (0.08 in)
• Pipe lengths : between 300 mm (12 in) and 4000 mm (118 in) can be ordered e.g. 227957A/3000 (3000 mm long)

Technical data

Designation	Dimensions							Weight
	G1	G	A	A1	Dw	Dw1	L
			mm  inches	mm  inches	mm  inches	mm  inches	mm  inches	kg  lbs
721740 A	G 3/4	G 1/8	11.5  0.45	36.9   1.45	7.94  0.31	15.88   0.63	1,000   39	0.3   0.7
227957 A	G 3/4	G 1/4	17.3   0.68	36.9   1.45	11.11   0.44	15.88   0.63	2,000   78	0.4   0.9
227958 A	G 3/4	G 3/4	36.9   1.45	36.9   1.45	15.88   0.63	15.88   0.63	2,000   78	0.6   1.3
1020612 A*	G 1/4	G 1/4	17.3   0.68	17.3   0.68	11.11   0.44	11.11   0.44	1,000   39	0.5   1.1
728017 A	G 1/4	G 1/4	17.3   0.68	17.3  0.68	11.11   0.44	7.94   0.31	300   12	0.2   0.4
727213 A**	G 1/4	G 1/4	17.3   0.68	17.3  0.68	7.94   0.31	7.94   0.31	300   12	0.2   0.4
729123 A	G 3/4	G 1/4	17.3   0.68	36.9  1.45	7.94   0.31	15.88   0.63	300   12	0.3   0.7
*  Maximum pressure 400 MPa (58,000 psi). Outer diameter of the pipe 6 mm (0.24 in).  ** The high pressure pipe 727213 A is designed to fit small OK-couplings (OK 25-OK 75). This pipe is not suitable for normal oil injection connection holes.