Technical Parameters and Characteristics
|
Product |
Globe valve |
|
|
Nominal Diameter |
NPS 1/2 Inch - 24 Inch |
DN15-DN600 |
|
Design temp. |
-29°C - 593°C |
|
|
Design pressure |
Class 150 - 2500 LB |
PN10-PN420 |
|
Material |
ASTM A216 WCB, WCC, A217 WC6, WC9, C5, C12A, A352 LCB, LCC |
|
|
Design standard |
BS 1873, ASME B16.34 |
DIN 3356 |
|
Face to Face |
ASME B16.10 |
EN 558 series |
|
Connection End |
ASME B16.5, ASME B16.25 |
EN 1092 series |
|
Test Standard |
API 598, ISO 5208 |
EN 12266-1 |
|
Operation |
Hand wheel, bevel gear, electric, pneumatic |
|
|
Application |
electric power, petroleum refining, petrochemical engineering, offshore oil, |
|
|
Function 1 |
OS&Y, bolted bonnet, rising stem |
|
|
Function 2 |
Short stroke for easy – quick open/close |
|
|
Function 3 |
For big Size and high pressure: relief cone = internal bypass |
|
|
Function 4 |
Disc sealing could be: flat sealing, throttle cone=regulating disc |
|
|
Function 5 |
Body seat could be threaded seat or welded seat |
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What is a Non-Rising Stem Gate Valve?
A valve where the stem does not move vertically but rotates internally to raise or lower the gate. This design is ideal for installations with limited vertical space.
How Does a Non-Rising Stem Gate Valve Work?
The handwheel turns the stem, which in turn moves the gate up or down inside the valve body without changing the external height of the stem.
How Does a Rising Stem Gate Valve Work?
The handwheel lifts the stem and gate together, providing a visual indication of whether the valve is open or closed.
Which Valve Should I Choose?
Use a rising stem valve for above-ground applications where visibility and ease of maintenance are important.
Use a non-rising stem valve for underground or space-limited installations.
Conclusion
The choice between rising stem and non-rising stem gate valves depends on your specific application needs. For clear valve status indication and easy maintenance, go with a rising stem valve. For compact installations, a non-rising stem valve is the better option.