MA-001 – TRANSFIX-family Installation Manual – Rev 3.0 18-Jan-16 Page 40 of 55
Appendix D Tubing Specification and Ordering Details
D.1 Specifications
¼ in. OD × 0.035 in. wall T316 seamless stainless steel tubing (6.35 mm
OD × 0.889 mm wall) (ASTM A269 / A213).
¼ in. ID low pressure, 316 stainless steel braid over stainless steel metal
flexible hose with welded ¼ in. compression fittings on each end.
D.2 Order Information (E.g. Swagelok)
Rigid tubing can be ordered from Swagelok in advance of the
installation. For example, a 20 foot length would have part number SS-
T4-S-035-20 (see the Swagelok website www.swagelok.com or your local
Swagelok representative).
Flexible hose can be ordered from Swagelok, but must be ordered in
custom lengths well in advance of the installation. For example, a
custom 8 meter FL series hose would have part number SS FL4TA4TA4-
800 (specified in centimetres) (see the Swagelok website
www.swagelok.com or your local Swagelok representative).
Do not use copper tubing (See Section D.6).
D.3 Tubing Unions
Tubing Unions connect two pieces of the above ¼ in. tubing together. GE recommend:
Swagelok: SS-400-6 Stainless Union, ¼ in. OD
Ham-Let: 762L SS 1/4 Stainless Union, ¼ in. OD
D.4 Shut-Off Valve
If the oil supply or return valve is located more than 6 ft (1.82 m) above the base of the
transformer, use a Swagelok tube fitting (SS-4P4T Stainless Plug Valve, ¼ in.) or a Ham-
Let tube fitting (H800MSSL Stainless Plug Valve, ¼ in.) as directed in this procedure.
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