Australian Pipeline Valve - Installation, Operation and Maintenance Manual
7
LUBRICATED PLUG VALVES - SAPM/SAPL
recommended that the insulation allows easy access for maintenance, to the sealant fittings, and to
the valve operator.
0) If the equipment is to be used on unstable gas duty, ensure that the operational parameters as
indicated on the product identification plate are not exceeded.
p) This equipment must be installed in a system that is designed to prevent excessive forces acting on
the flanges, connections, etc.
q) This equipment should be protected by other devices to prevent over-pressurisation. (i.e. Caused by
external fire, etc).
r) Lethal Service. In accordance with the design verification code (ASME Boiler and Pressure Vessel Code
Section VIII Division 1) a casting quality factor of 1.0 is allowable for all products except those
intended for ‘lethal service’. All products for such service must have had nondestructive examination
carried out in accordance with Appendix 7 of the code. Refer to APV.
s) End Flanges: The end flange design of this product has been verified by either:
ASME Boiler and Pressure Vessel Code Section VIII Division 1 calculation method;
Finite Element Analysis in accordance with ASME Boiler and Pressure Vessel Code Section VIII
Division 2 - Alternative rules;
Experimental testing as defined in BS EN 12516-3, Valve Design Strength - Part 3 Experimental Method.
Gaskets: The gaskets used in all methods are Spiral Wound to BS EN 1514-2 for PN rated Flanges and
ASME B16.20 for Class rated flanges. These have Gasket Factors and Design Stresses of 2.5 and 10000
psi respectively for Carbon Steel gaskets, and 3.0 and 10000 psi respectively for Stainless Steel
gaskets, as defined in the ASME Boiler and Pressure Vessel Code Section VIII Division 1.
If gaskets are used with higher Gasket Factors and Design Stresses than those stated above, please
consult APV.
Bolting: End flanges for steel valves have been verified by the methods stated above, using bolt
design stress values based on those for ASTM A193 B7, B7M, B8, B8M as defined in ASME Boiler and
Pressure Vessel Code Section II - Materials - Part D - Properties.
Flanged CAST IRON plug valves have flat faced flanges for use with full face across gaskets.
