I.C. Gate Valve Screw End
Investment Cast Gate Valve with BSP/NPT threading. Class 150. Sizes 1/2" to 2". ASTM A351 CF8/CF8M materials.
Key Applications
Frequently Asked Questions
What is an inside screw gate valve?
An inside screw gate valve has the stem thread inside the valve body, meaning the stem does not rise above the handwheel when the valve opens. This provides a more compact design but hides the stem condition from external inspection. They are used for water, steam, and oil service where the valve is not expected to need frequent inspection.
When should I use a screwed end gate valve?
Screwed end gate valves are used in smaller pipe sizes (typically DN15-DN80) for isolation duties where the valve needs to be removed for maintenance. They are common in utility piping, HVAC systems, and instrument air lines. For larger sizes or higher pressures, flanged connections are preferred for easier maintenance.
Frequently Asked Questions
What is an inside screw gate valve?
An inside screw gate valve has the stem thread inside the valve body, meaning the stem does not rise above the handwheel when the valve opens. This provides a more compact design but hides the stem condition from external inspection. They are used for water, steam, and oil service where the valve is not expected to need frequent inspection.
When should I use a screwed end gate valve?
Screwed end gate valves are used in smaller pipe sizes (typically DN15-DN80) for isolation duties where the valve needs to be removed for maintenance. They are common in utility piping, HVAC systems, and instrument air lines. For larger sizes or higher pressures, flanged connections are preferred for easier maintenance.
Materials of Construction (MOC)
| Component | Material Specification |
|---|---|
| Body & Bonnet | Ductile Iron (ASTM A536 / EN-GJS-400-15) |
| Stem / Spindle | SS 410 / SS 420 |
| Seat / Trim | EPDM / NBR / Bronze |
Technical Specifications
| Parameter | Specification / Standard |
|---|---|
| Manufacturing / Design Standard | EN 1171 / AWWA C509 / BS 5163 |
| Testing Standard | API 598 / EN 12266-1 |
| Pressure Rating | PN16 / PN25 |
