Ball valve

A ball valve is a quarter-turn valve used for rapid isolation. Its straight flow path and 90-degree ball movement support low pressure loss and fast operation. Correct selection depends on body construction, ball design, seat arrangement, trapped-cavity pressure relief, fire-safe requirements and material compatibility with the process fluid.

Application and duty

Services requiring tight isolation and quarter-turn operation

TECHNICAL REFERENCE

Selection summary

Size range
NPS 1/2–4 (DN 15–100)
Pressure class
ASME Class 150
End connection
Raised-face flanged
Body material
ASTM A216 WCB · ASTM A351 CF8M · ASTM A217 WC6
Design standard
API 608 · ASME B16.34 · ASME B16.10 · ASME B16.5 · API 598
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