Pneumatic Single Seat Globe Control Valve

Pneumatic Single Seat Globe Control Valve – Tight Shutoff for Critical Service

Pneumatic single seat globe control valves feature unbalanced plug design where process pressure acts on the full seating area, providing superior shutoff (Class V-VI per FCI 70-2) compared to balanced or cage-guided alternatives. This single-contact seating arrangement achieves bubble-tight closure essential for African pharmaceutical clean steam, specialty chemical dosing, and applications where zero leakage during shutoff prevents product contamination, environmental release, or safety hazards from process fluid passage.

The single seat configuration accepts higher pressure drops than balanced designs, making these valves ideal for African pressure-reducing stations, letdown applications, and services requiring both precise throttling during operation and absolute isolation when closed. Actuator sizing accounts for unbalanced forces requiring larger pneumatic operators compared to balanced alternatives, but the superior shutoff performance justifies increased actuator costs for critical applications demanding leak-tight closure.