|
GLOBE VALVES
|
STANDARD MATERIAL SPECIFICATIONS |
|
[VALVE
DIMENSIONS] |
[STANDARD
MATERIALS]
SERVICE RECOMMENDATION
- The globe valve is normally
installed with flow direction and pressure under the disc. In case
the flow in valve directs to the opposite direction, always check
at factory before installing the valve. Under a certain service
condition, especially when a valve is equipped with cylinders or
electric motor actuators, there is a cost advantage in designing
and installing the valve flow over the disc. If the actuator is
sized to such condition, care must be taken to install the valve
correctly.
- The globe valve is
suitable for most throttling applications; however, it must not be
used for a prolonged throttling at 10% open or less, which may
cause excessive vibration, noise or damage to disc and seat. Use
of small valves with a lower flow capacity may permit the valve to
be opened to a greater percentage, and thus avoid damage. For
continuous severe throttling, a control valve is required.
|
|
|
[VALVE DIMENSIONS]
|
[STANDARD
MATERIALS] |
| BILL
OF MATERIALS |
|
NO |
PART NAME |
|
MATERIAL |
REMARKS |
| 1 |
BODY |
|
A216 WCB |
|
|
2 |
BONNET |
|
A216 WCB |
|
| 3 |
DISC |
|
A576-C/S 1025 |
|
|
A216 WCB |
SIZE 4" AND LARGER |
|
4 |
STEM |
|
A479-410 |
|
| 5 |
HAND WHEEL |
|
A197 |
SIZE 6" AND LARGER + HAMMER
BLOW TYPE |
|
6 |
BODY SEAT |
|
BODY INTEGRAL |
|
|
A216 WCB |
SIZE 6" AND LARGER + HAMMER
BLOW TYPE |
| 7 |
BELLOWS SET |
BELLOWS |
STAINLESS STEEL TYPE 321 |
|
| 7.1 |
HOLDER |
A479-304 |
IMPORTED ARTICLES |
| 7.2 |
DISC NUT |
A479-304 |
|
|
8 |
GASKET |
|
GRAPHITE SHEET TYPE |
SIZE 3" AND SMALLER |
|
Spiral wound type(Graphite +
inner ring) |
SIZE 4" AND LARGER |
| 9 |
PACKING |
|
Pure graphite + lattice
braided carbon fiber packing, impregnated with special
lubricant |
|
10 |
GLAND FLANGE |
|
A105 |
|
|
A283-D |
SIZE 4" AND LARGER |
| 11 |
HINGE |
BOLT |
A307B |
SIZE 3" AND SMALLER |
| 11.1 |
NUT |
| 11.2 |
PIN |
A576-C/S 1020 |
|
12 |
GLAND |
BOLT |
A307B |
SIZE 4" AND LARGER |
|
12.1 |
NUT |
| 13 |
PACKING GLAND |
|
A576-C/S 1020 + Cr |
PLATING |
|
14 |
BONNET |
BOLT |
A193 + B7 |
|
| 15 |
|
NUT |
A1494-2H |
|
|
16 |
YOKE |
YOKE |
A83-D |
SIZE 4" AND LARGER |
|
16.1 |
BUSH |
A439-D2C |
SIZE 3" AND SMALLER |
|
16.2 |
BAR |
A576-C/S 1020 |
SIZE 4" AND LARGER |
|
16.3 |
NUT |
A194-2H |
|
16.4 |
SLEEVE |
A439-D2 |
|
16.5 |
CAP |
A576-C/S 1020 + Zn PLATING |
|
16.6 |
CAP WASHER |
A576-C/S 1020 |
| 17 |
DISC RETAINER |
|
A479-410 |
|
|
18 |
STOPPER |
GUIDE |
A216 WCB |
SIZE 4" AND LARGER |
|
18.1 |
BOLT |
A307B |
|
18.2 |
KET |
A576-C/S 1045 |
| 19 |
HAND WHEEL NUT |
|
A307B |
|
|
20 |
NAME PLATE |
|
STAINLESS
STEEL |
|
|
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