Piston Valves

FlowBiz brand Piston Valves offers glandless Piston Valves for assured long-term performance in process lines, steam & condensate. FlowBiz offers Piston Valves with flanged, socket-weld, and screwed ends connections. The ingenious valve is used for both isolation and throttling applications.

FlowBiz Piston Valve’s sealing affects the Piston’s linear motion between the lower and upper valve rings. The valve closes when the Piston engages with the lower ring. The valve opens when the Piston aligns with the upper circle. Meanwhile, the Piston prevents atmospheric leakage in conjunction with the upper ring.

Sizes: ½” to 8.”

Class: 150, 300 and 800

Compliance Standards:

• Valve Design: ASME B16.34, EN12516-2
• Wall Thickness: ANSI B16.34
• Face-to-Face : ASME B16.10, ASME B16.11
• Flange Dimensions: ANSI B16.5
• Pressure Testing: API 598

Option:

Balanced Piston Valves - To address high torque requirement due to high inlet pressure in sizes above DN65.