2NPS WCB 150 CLASS CAST STAINLESS STEEL FLANGED GLOBE VALVE
STAINLESS STEEL GLOBE VALVE
Globe valves
Stardard Connections:Flanged Ends
ASME Class: 150# ~ 1500#
JIS Class: 10K ~ 63K
DIN Class: PN10 ~ PN160
Size:1/2" ~ 12"
| Actuation | handwheel |
| Connection | for mounting between ANSI 150 and DIN PN 10/16 pipe flanges. |
| DN: | 15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200 |
| PN: | 16 |
| Seal Material | SS AISI 420 |
| Tmax | -10°C/+300°C |
| Valve Type | Globe valve, rising stem |
Material
A351-CF8
A351-CF8M
A351-CF3M
Other Materials upon Customer's Request
Conventional Globe valves may be used for isolation and throttling
services. Although these valves exhibit slightly higher pressure
drops than straight=through valves (e.g., gate, plug, ball, etc.),
they may be used where the pressure drop through the valve is not a
controlling factor.
A Globe valves is a linear motion valve and are primarily designed
to stop, start and regulate flow. The disk of a Globe valve can be
totally removed from the flowpath or it can completely close the
flowpath.
Because the entire system pressure exerted on the disc is
transferred to the valve stem, the practical size limit for these
valves is NPS 12 (DN 300).
Body designs of Globe valves
There are three primary body designs for Globe valves, namely..
Tee Pattern or Z-body
Angle Pattern
Wye Pattern or Y-body body
Disk and Seat and Stem of Globe valves
Disk.. The most common disk designs for Globe valves are.. ball disk,
composition disk and the plug disk. Ball disk design is used
primarily in low pressure and low temperature systems. It is
capable of throttling flow, but in principle it is applied to stop
and start flow.
Composition disk design uses a hard, non-metallic insert ring on
the disk, which ensures a tighter closure.
Plug disk design provides better throttling than ball or
composition designs. They are available in many different designs
and they are all long and tapered.
Seat.. Globe valve seats are either integrated or screwed in to the valve
body. Many Globe valves have backseats inside the Bonnet. Back
seats provides a seal between the stem and Bonnet and prevents
system pressure from building against the valve pakking, when the
valve is fully open. Back seats are often applied in Globe valves.
Stem.. Globe valves uses two methods for connecting the disk and the
stem.. the T-slot and the disk nut construction. In the T-slot
design, the disk slides over the stem, while in the disk nut
design, the disk is screwed into the stem.
Typical Applications of Globe valves
The following are some of the typical applications of Globe
valves..
- Cooling water systems where flow needs to be regulated
- Fuel oil system where flow is regulated and leaktightness is of
importance
- High-point vents and low-point drains when leaktightness and safety
are major considerations
- Feedwater, chemical feed, condenser air extraction, and extraction
drain systems
- Boiler vents and drains, main steam vents and drains, and heater
drains
- Turbine seals and drains
- Turbine lube oil system and others
