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37° Flare Fittings

37° Flare Fittings

Product catalog summary

Overview: This document outlines the technical specifications and assembly instructions for a 3-piece tube assembly using stainless steel high-pressure 37° tube fittings, compliant with SAE Standard J514, and available in sizes from 1/8’’ to 2’’.

Specifications: The tubing must be fully annealed, seamless, and drawn, suitable for bending and flaring per ASTM-269 standards, using A.I.S.I. 316 or 304 stainless steel. Finished tubing should be straight, with smooth, burr-free ends, and free from scale and defects.

Quality Standards: Tubing must comply with SAE J524 quality standards, allowing surface imperfections within specified tolerances but no injurious defects.

Tube Handling: Proper handling is essential to prevent scratches that could lead to leaks. Tubes should not be dragged on the floor or out of racks.

Tube Cutting: Tubes can be cut using a tube cutter or hacksaw. The tube cutter should ensure square cuts, and ends must be deburred. Hacksaw cutting requires guide blocks for square ends and deburring.

Assembly Instructions:

Cut the tube to the required length.
Slide the nut and sleeve onto the tube.
Form the flare to a 37° angle using a flaring tool as per SAE STD. J533.
Screw the nut onto the body until finger tight, then tighten with a wrench 1/4 turn for a leakproof connection.

Flaring Dimensions: Table 1 provides dimensions for single flare diameters and deburring requirements for various tube sizes.

Pressure Ratings: Table 2 outlines allowable working pressure ratings, noting that many factors influence system performance, and values should not be seen as guaranteed minimums.

Components and Ordering Information: The document lists various components such as sleeves, nuts, connectors, and adapters with their respective SAE codes and dimensions for ordering.

Important Notes:

Avoid holding the tube in a vise where it will be inserted into the fitting to prevent marks that may cause leaks.
Metric tubes can be used with a metric 37° sleeve.
Dimensions are for reference and subject to change without notice.

Catalog excerpts

STAINLESS STEEL HIGH PRESSURE 37° TUBE FITTINGS 1/8’’ TO 2’’ ADVANCED CONTROL TECHNOLOGY

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If necessary, see SAE Standard J514 for a complete list of dimensions. NPT Tapered Pipe Threads meet the requirements of ASME/ANSI B.I.20.1. All 37° Flared Tube Fittings 3-Piece Tube Assembly can be used with a metric tube by using a metric 37° sleeve, instead of an inch sleeve. Each dimension table shows which metric sleeve should be used for every size. ASSEMBLY INSTRUCTIONS 1. Cut the tube to the proper length. 2. Slide the nut and sleeve onto the tube. (see Fig.1). 3. With a special flaring tool, form the flare to 37° dimension according to SAE STD. J533. (see Fig.2 page 125). 4. Screw the...

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ASSEMBLY INSTRUCTIONS Perform flaring according to SAE J533. See Fig. 2. See Table 1 below for dimensions. HAM-LET ADVANCED CONTROL TECHNOLOGY ^HAM-LET 125

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All 37° Flared Tube Fittings 3-Plece Tube Assembly can be used with a metric tube by using a metric 37° sleeve, Instead of an Inch sleeve. Each dimension table shows which metric sleeve should be used for every size.

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INCH SLEEVE “D” Dimension is minimum opening. Dimensions are for reference only, and are subject to change without notice. HAM-LET ADVANCED CONTROL TECHNOLOGY

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“D” Dimension is minimum opening. Dimensions are for reference only, and are subject to change without notice.

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Ordering Information CONNECTORS 742 HFL LARGE HEX UNION S.A.E. 070119 Ordering Information “D” Dimension is minimum opening. Dimensions are for reference only, and are subject to change without notice. HAM-LET ADVANCED CONTROL TECHNOLOGY

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CONNECTORS Ordering Information “D” Dimension is minimum opening. Dimensions are for reference only, and are subject to change without notice.

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745 HF MALE BRANCH TEE S.A.E. 070425 Ordering Information CONNECTORS *Not from Forging “D” Dimension is minimum opening. Dimensions are for reference only, and are subject to change without notice. HAM-LET ADVANCED CONTROL TECHNOLOGY 131

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CONNECTORS Ordering Information “D” Dimension is minimum opening. Dimensions are for reference only, and are subject to change without notice.

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Ordering Information CONNECTORS “D” Dimension is minimum opening. Dimensions are for reference only, and are subject to change without notice. HAM-LET ADVANCED CONTROL TECHNOLOGY 133

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748 HOB MALE CONNECTOR SAE straight thread boss connects flared tube ends to straight thread boss S.A.E. 070120 CONNECTORS Ordering Information “D” Dimension is minimum opening. Dimensions are for reference only, and are subject to change without notice.

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Ordering Information CONNECTORS *Not from Forging “D” Dimension is minimum opening. Dimensions are for reference only, and are subject to change without notice. HAM-LET ADVANCED CONTROL TECHNOLOGY 135

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CONNECTORS Ordering Information *Not from Forging “D” Dimension is minimum opening. Dimensions are for reference only, and are subject to change without notice.136 37° 3-PIECE TUBE ASSEMBLY

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CONNECTORS Ordering Information “D” Dimension is the minimum opening. Dimensions are for reference only, and are subject to change without

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Ordering Information CONNECTORS *Not from Forging “D” Dimension is the minimum opening. Dimensions are for reference only, and are subject to change without HAM-LET ADVANCED CONTROL TECHNOLOGY 139

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772 HFL FEMALE BRANCH TEE S.A.E. 070427 CONNECTORS Ordering Information *Not from Forging “D” Dimension is the minimum opening. Dimensions are for reference only, and are subject to change without

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Ordering Information CONNECTORS 774 HFLN BULKHEAD LOCKNUT S.A.E. 070118 “D” Dimension is the minimum opening. Dimensions are for reference only, and are subject to change without HAM-LET ADVANCED CONTROL TECHNOLOGY

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CONNECTORS Ordering Information “D” Dimension is the minimum opening. Dimensions are for reference only, and are subject to change without

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Ordering Information CONNECTORS 7640 HF CAP S.A.E. 070112 Ordering Information “D” Dimension is the minimum opening. Dimensions are for reference only, and are subject to change without HAM-LET ADVANCED CONTROL TECHNOLOGY

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37° Flare Fittings

37° Flare Fittings

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