Australian Pipeline Valve - Installation, Operation and Maintenance Manual
13
FLOATING BALL VALVES - SLFSBV02 & SLBV02 SERIES
5 . 0 C O N S T R U C T I O N
Following is a typical disassembly explosion of an APV floating 1 piece ball valve. The number of parts will
slightly vary in each size & class but the principal components are below. Refer to as-built drawing
supplied with the valve for actual bill of material.
NO.
DESCRIPTION
14
*2
8
18
7
15
11
6a
FIG 4. VALVE DESIGN
16
1
Body
2
Retainer
2
Ball
3
Seat Ring
4
Stem
6
Antistatic Device
5
Thrust Seal
6a
Stem Bush Seal *2
7
Gland Packing
11
Gland Nut/Flange *1
14
Snap Ring or Retainer *3
14a
Washer
16
Lever
18
Stopper
20
Gasket (s)
22
Stem O-ring *3
*1 Gland flange or gland nut in smaller sizes
*2 Depends on size & class
*3 An elastomer O-ring is also used in larger sizes and higher classes
FIG 4. TOP WORKS
(yoke type packing retainer)
MULTI-STAGE PACKING
Stem sealant injection is not required. Can also
be specified elastomer free for a wider range of
service and temperature conditions.
ANTI-STATIC STEM DEVICE
ADJUSTABLE PRELOADED GLAND*
Ensures even packing adjustment without need for continuous adjustment.
(*Nut or Yoke Type depending on size/class)
PTFE or ELASTOMER
PRIMARY STEM SEAL
(optional on smaller sizes in lower
pressure classes)
PTFE THRUST SEAL
BELLEVILLE/SPRING WASHERS
FIG 4a. TOP WORKS
(gland nut type packing retainer
14
14a
11
10
10
7
4
6a
6
21
20
2
3
1
5
22
18
16
FIG 5. BILL OF MATERIALS
The above is indicative only, design depends on size, class and trim, etc. Refer to as-built drawing.
