How to Order Hose Assemblies

HOW TO ORDER HOSE ASSEMBLIES

HOSE ASSEMBLIES OF SPECIFIC LENGTHS
ALL RYCO HOSE ASSEMBLIES ARE MANUFACTURED SEAT TO SEAT LENGTH UNLESS OTHERWISE SPECIFIED BY CUSTOMER.
Length of a Hose Assembly can be measured in three ways:

1.	Seat to Seat Length. (RYCO Standard, unless otherwise specified). Length is measured from tip of seat to tip of seat.

2.	Overall Length. (OA) Length is measured from tip of nut to tip of nut.

3.	Cut Hose Length. (CL) This is the length that the hose is cut to before couplings are attached. The length of the couplings is extra.

NOTE: For male fittings and flanged fittings, seat and overall length measurement points are the same.

ORIENTATION OF FITTINGS
Proper positioning of elbow end fittings
on a hose is governed by the offset angle,
or the amount of angular offset between
connecting parts in the installation. If this
angle of orientation is not correct in the
construction of a hose assembly the
performance and life of the assembly will
be greatly reduced.

HOW TO MEASURE
Orientation is determined by the number
of degrees between the fitting furthest
from the viewer and the fitting nearest
to the viewer, measured in a clockwise
direction.
Orientation Tolerances:
± 3° on lengths up to 600 mm (24”).
± 5° on lengths over 600 mm (24”).

When ordering Hose Assemblies, specifying by the following system will assist; or alternatively supply a clear, concise drawing or sketch.

	1.	Hose Type.
	2.	(Hose Protection or extra operations to hose) - if applicable.
	3.	Hose Assembly Length (expressed in mm), followed by method of measurement: blank if “Seat to Seat Length” -OA if “Overall Length” -CL if “Cut Hose Length”
	4.	Fitting End 1.
	5.	Fitting End 2.
	6.	Angle of Orientation if both fittings are elbows and/or tube bends.

EXAMPLES:

	1.	T18A * 1830 * T209-0808 * T204-0814 Hose will be made 1830 mm Seat to Seat.
	2.	T18A * 1830-OA * T209-0808 * T204-0814 Hose will be made 1830 mm tip of T209 male to tip of T204 nut.
	3.	T28D * 1830 * T205-0808 * T273-0824 @ 135° Hose assembly will be manufactured so that when T205-0808 is furthest away the T273-0824 will be oriented 135° clockwise.
	4.	T28A * 1640-CL * L01-0812 * L04-0817 Hose will be cut to 1640 mm and length of fittings will be extra.
	5.	H1212A * (RSG-32 * 1000) * 1000-OA * T763-1236 * T772-1236 Hose will be covered with RSG for full length of hose assembly. Length will be overall from T763 tip to T772 bend centreline.
	6.	RQP212 * (PIERCE * 2200) * 2200 * T209-1212 * T204-1217 Hose cover will be pierced/pin pricked.
	7.	T18A * 1830 * T201-0808 * T202-0808 + S27-0808 The length of the S27-0808 is extra, not included in the 1830 mm.

Cut-Off Allowance (CA)

Values for Cut-off Allowance (CA) dimensions are published in this Product Technical Manual.
CA dimensions allow calculation of the Hose Cut Length required to make a Hose Assembly of a particular Seat to Seat Length.

EXAMPLE: For a Hose Assembly using T204-0609 coupling one end, and T209-0606 coupling other end, with a required Seat to Seat Length of 750 mm, calculate the Hose Cut Length required.
From page 108, CA dimension for T204-0609 is 20 mm. This is "coupling 1" for the required hose assembly.
From page 105, CA dimension for T209-0606 is 33 mm. This is "coupling 2" for the required hose assembly.

Cut Length of Hose = Seat to Seat Length of Hose Assembly - CA (coupling 1) - CA (coupling 2) = 750 mm – 20 mm – 33 mm = 697 mm

IMPORTANT NOTES:

	1.	CHECK AND MEASURE COUPLING BEFORE CUTTING HOSE For all Couplings, before calculating the Cut Length of the hose, measure and check that the CA dimension of the physical coupling complies with that published. CA dimensions may vary due to manufacturing method or design refinement.
	2.	HOSE ASSEMBLY LENGTH GROWTH AFTER COUPLING ATTACHMENT The CA dimension is measured from where the hose abuts when fully inserted, to the connection end seat of the coupling. With most Crimp Couplings, and Field Attachable Couplings having ferrules*; due to compression of the hose within the coupling after attachment, a growth in length occurs, in addition to the published CA dimension. Growth varies with different types and sizes of hose and couplings. For longer hoses, and non-critical applications, it is common practice to ignore the growth, as the extra length generated usually does not affect the function of the hose assembly. In applications where the length of the hose assembly is critical, the growth must be allowed for when calculating Cut Length of hose. RYCO recommends measuring the growth when the first coupling is attached by measuring between reference points marked on the coupling and hose before and after coupling attachment, then adjusting the Cut Length of the hose to compensate.
	3.	See page 203 for extra information about CA dimensions for A00, B00, K00, L00 and 400 Series Field Attachable couplings.
	4.	See note on page 100 regarding Drop Length (DL) and Cut-off Allowance (CA) published dimensions.
	5.	For Hose Assemblies, the following must be considered: Maximum Working Pressure of the Hose; End Style (Connector Termination), see pages 419 to 422, and Minimum Free Length, see page 398 in the “Safety Guide”, pages 396 to 399

* For 1100 Series with RTH1 hose, growth is less than 5 mm; for T400 Series couplings with SR and SRF hose series, growth varies and must be measured each time.

** For practical purposes, 800 Series Push-On and 3300 Series couplings do not experience extra growth.