Flowserve McCANNA CryoSeal Ball Valves - Manual (Page 4)

McCANNA CryoSeal ® Ball Valves FCD MMENIM2007-01-AQ – 04/15
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2.1 General
McCANNA Cryoseal valves may be installed up to 45° from the vertical position. These valves are
unidirectional due to the need for cavity relief and must be installed in the correct orientation.
Installation methods and procedures should follow good industry practice, such as contained in
MSS-SP-92, or similar document.
a CAUTION: Check adjuster nut and bonnet fastener torques prior to testing or installation, and
re-tighten as needed (see tables 2 & 3). These fasteners may loosen during shipment, which
could result in external leakage.
a WARNING: Do not attempt any maintenance of these valves while in operation or under
pressure. Actuated valve air and/or electrical power supplies must be locked off and isolated
prior to any maintenance work. Failure to do so may result in significant equipment damage,
hazardous material discharge, or serious personal injury.
2.2 Flanged End Valves:
Flanged end valves are to be bolted in line to companion flanges of the same pressure class and facing
as the valve flanges, using the proper size and pressure class flange gaskets. Flowserve does not
provide companion flanges or flange gaskets. Flange bolt torquing should follow proper tightening
sequence outlined in Figure 6 on Page 13.
2.3 Weld End Valves:
2.3.1 Before installing weld end valves in line, remove bonnet, ball, and seats. Protect parts from
dirt or damage while out of valve, especially the seating surfaces in the body. Be very careful
to avoid heat distortion of the valve body during welding. A spare bonnet gasket has been
provided and should replace the original gasket during reassembly.
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Installation