Australian Pipeline Valve - Installation, Operation and Maintenance Manual
29
API6D THROUGH CONDUIT EXPANDING GATE VALVE - AP400-405 SERIES
A P P E N D I X 1
Materials for main parts
A P P E N D I X 2
DIAGRAM 3
Bolting torque sequence: 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8
Stud Lubrication
• Re-tightening of body (with system de-pressurisation) bolting is permissible, if body leakage occurs.
• Use a Copper-Based Anti-Seize Grease for stud lubrication.
Part Name
Material
Standard Type Soft Seat
Standard Type Metal Seat
Body
Carbon Steel
Carbon Steel
Bonnet
Carbon Steel
Carbon Steel
Yoke
Carbon Steel
Carbon Steel
Stem
Stainless Steel
Stainless Steel
Seat
Stainless Steel
Carbon Steel + Stellite
Gate
Stainless Steel
Carbon Steel + Stellite
Packing
Viton + PTFE + Expanding Graphite
Viton + PTFE + Expanding Graphite
Gland Flange
Carbon Steel
Carbon Steel
Stem Nut
Casting Copper Alloy
Casting Copper Alloy
Sealing Face
Soft, Hard Sealing
Metal to Metal
Seat Insert
PTFE
Stellite
Gasket
304 + Flexible Graphite
304 + Flexible Graphite
The materials can be selected upon customer’s different requirements and product design specifications. Materials vary according to size, class & model,
refer as built drawing.
