Aflex Hose Ltd - Specifications for High Pressure Hose Grades

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Specifications for High Pressure Hose Grades

SPECIFICATIONS and SIZE RANGE FOR HIGH PRESSURE HOSE (GRADE HI)

*Part No.	Aflex Nominal Bore Size and 'dash' reference	Grade	Actual Bore Size		PTFE Tube Wall Thickness		Outside Diameter of Braid		Maximum Working Pressure (4:1 Safety)		Burst Pressure		Minimum Bend Radius		Weight per Unit Length
*Part No.	Aflex Nominal Bore Size and 'dash' reference	Grade	in	mm	in	mm	in	mm	psi	bar	psi	bar	ins	mm	lbs per foot	kgs per metre
70-300-04-03-02	3/16"BB -4	MW,HI	.200	5.08	.030	.76	.354	8.99	5,500	380	21,800	1,500	1.57	39.87	.140	.21
70-300-07-03-02	7/32"	MW,HI	.220	5.58	.030	.76	.375	9.52	5,000	340	20,000	1,380	1.68	42.67	.145	.22
70-300-06-03-02	5/16" -6	MW,HI	.315	8.00	.030	.76	.486	12.34	4,700	320	18,900	1,300	1.75	44.45	.160	.24
70-300-08-03-02	3/8"BB -8	HW,HI	.394	10.00	.040	1.01	.550	13.97	4,400	300	17,500	1,200	1.90	48.26	.220	.33
70-300-10-03-02	1/2"BB -10	MW,HI	.530	13.46	.030	0.76	.690	17.52	2,500	170	10,100	700	3.10	78.74	.240	.36
70-300-13-03-02	13/32"BB	HW,HI	.406	10.31	.040	1.01	.675	17.14	4,350	300	17,500	1,200	2.70	68.58	.235	.35

SPECIFICATIONS and SIZE RANGE FOR VERY HIGH PRESSURE HOSE (GRADE VHI)

*Part No.	Aflex Nominal Bore Size and 'dash' reference	Grade	Actual Bore Size		PTFE Tube Wall Thickness		Outside Diameter of Braid		Maximum Working Pressure (4:1 Safety)		Burst Pressure		Minimum Bend Radius		Weight per Unit Length
*Part No.	Aflex Nominal Bore Size and 'dash' reference	Grade	in	mm	in	mm	in	mm	psi	bar	psi	bar	ins	mm	lbs per foot	kgs per metre
70-200-04-03-555502	1/4"	HW,VHI	.250	6.35	.040	1.01	0.475	12.00	8,000	550	32,000	2,200	1.28	30	.168	0.25
70-200-06-03-555502	3/8"	HW,VHI	.375	9.53	.040	1.01	0.673	17.10	8,000	550	32,000	2,200	1.57	40	.235	0.34
70-200-08-03-555502	1/2"	HW,VHI	.500	12.90	.040	1.27	0.777	19.75	6,000	410	24,000	1,650	2.16	55	.268	0.40
70-200-12-03-555502	3/4"	HW,VHI	.750	19.05	.050	1.27	1.100	28.00	5,000	340	20,000	1,380	4.72	120	.450	1.477

* For Anti-Static Grade, add 10 to the 3-digit Part Number e.g. 70-300 becomes 70-310.
For High Pressure Gas Grade, add 20, e.g. 70-300 becomes 70-320.

Note: some of the sizes and grades of High pressure hose listed above are not available ex-stock, and are therefore only made to special order.

Temperature & Pressure

- Temperature affects the Maximum Working Pressure (MWP) as listed above, so for temperatures above 130°C reduce the MWP by 0.75% for each 1°C above 130°C. Example: at 180°C, reduce the MWP by (180 - 130) x 0.75 = 37.5%.

- Pressure Ratings above 100 Bar (1500 psi) only apply for the transfer of non-penetrating fluids. If gases or penetrating fluids are used at higher pressures, HPG grade hose is required.

- Maximum Working Pressures (MWP) listed are calculated on the basis of a 4:1 safety factor relative to the burst pressure, so Burst Pressure = 4 x MWP. If MWP is required based on a 3:1 safety factor, multiply the listed value by 1.33.