Flowserve F519 Flanged ANSI - Manual (Page 4)

3 HEALTH AND SAFETY (cont.)
Bolting: End flanges have been verified by the methods stated above, using bolt design stress values
based on those for ASTM A193 B8 Cl.2 (i.e.25000/20000psi - dependant on the bolt size) for
Stainless Steel valves, and ASTM A320 L7 (25000psi) for Carbon Steel valves as defined in 2001
(2003 addenda) ASME Boiler and Pressure Vessel Code Section II - Materials - Part D - Properties.
n) Lethal Service. In accordance with the design verification code (2001 (2003 addenda) ASME Boiler
and Pressure Vessel Code Section VIII Division 1) a casting quality factor of 1.0 is allowable for
all products. Those intended for 'lethal service' must have had non-destructive examination carried out
in accordance with Appendix 7 of the code. Refer to Flowserve Flow Control (UK) Ltd Technical Sales.
o) If the processes or environments that the products are used in are likely to cause temperatures
(high or low) that may cause injury to personnel if touched, then adequate insulation/protection must
be fitted.
p) If the equipment is to be used on unstable gas duty, ensure that the operational parameters as
indicated on the product identification plate cannot be exceeded.
q) This equipment should be protected by other devices to prevent over-pressurisation.
(i.e. caused by external fire etc).
r) This equipment must be installed in a system that is designed to prevent excessive forces acting on
the flanges, connections, etc.
4 PREPARATION FOR INSTALLATION
When dispatched, valves contain a mineral oil which aids the bedding in of the valve. This may be
removed if found unsuitable. Special variants may contain other lubricants or be dry built.
Some valves contain a Silica gel bag inside the ball cavity to absorb humidity during storage.
These must be removed before installation, as must all other protective packaging.
It is important to ensure that the gland nut locking clip is retained at all times. If, during installation, it is
noted that the locking clip is not in place, the gland nut must be adjusted to the correct torque and a
new locking clip fitted.
Significant problems can arise with any valve installed in an unclean pipleline.
Ensure that the pipeline has been flushed free of dirt, weld spatter, etc. before installation.
The working area should be clean and clear of any debris which could contaminate the valve.