What is a 1/4" ball valve with pneumatic actuator used for?

A 1/4 inch pneumatic actuated ball valve is used for automated on/off control in hydraulic test systems, pneumatic circuits, process control, leak testing equipment, and small-bore pipeline applications. The pneumatic actuator provides fast, reliable switching with fail-safe capability. Common applications include hydraulic oil pressure leak test benches, automated machinery, and process instrumentation.

What does 'fail-to-close' mean in a pneumatic actuated ball valve?

Fail-to-close (FC) means the valve automatically returns to the CLOSED position when air supply is lost or during a power failure. This is a critical safety feature in hydraulic oil systems and leak test applications where an uncontrolled open valve could cause oil spillage, equipment damage, or safety hazards. The spring return mechanism ensures the valve closes even without air or electrical power.

Can this valve handle 100 bar hydraulic oil pressure?

Yes, when specified with appropriate body material (forged stainless steel SS316 or carbon steel A105), this 1/4 inch ball valve assembly is rated for working pressures up to 100 bar (1450 PSI). The RPTFE (Reinforced PTFE) seat provides API 598 zero leakage performance even with high-pressure hydraulic oil (SAE 10) at temperatures up to 90°C.

What is the position feedback on this actuated ball valve?

The valve assembly includes 2 solid-state proximity switches (24VDC) - one for the fully OPEN position and one for the fully CLOSED position. These switches provide real-time position feedback to your PLC or control system, confirming the valve has completed its stroke. Solid-state switches are preferred over mechanical limit switches for their longer life and faster response.

Is this a direct replacement for Assured Automation A26NRXP8DC5BUB?

Yes, Supreme Valves India provides a suitable equivalent to the Assured Automation A26 series. Our 1/4 inch ball valve with dual scotch yoke pneumatic actuator matches the specifications: FNPT connection, RPTFE seat, 80 PSI air supply, double acting with fail-to-close, and 24VDC solid-state proximity switches for position feedback. We ensure dimensional and functional interchangeability.

1/4 inch Ball Valve with Pneumatic Actuator FNPT - Supreme Valves India

Pneumatic Actuated Ball Valve

1/4" 2-Way Ball Valve with Pneumatic Actuator & Position Feedback

Name: 1/4" 2-Way Ball Valve with Pneumatic Actuator & Position Feedback FNPT
Brand: Supreme Valves India
SKU: SV-BV-025-PA-FNPT-DA-FC
Rating: 4.9 (48 reviews)

Compact pneumatic actuated ball valve with dual scotch yoke actuator, double acting with fail-to-close safety. FNPT connection, RPTFE seat, API 598 zero leakage. Includes 2x solid-state 24VDC proximity switches for open/closed position feedback.

Quick Specifications

Size: 1/4" (DN8)

Connection: FNPT

Seat: RPTFE

Actuator: Dual Scotch Yoke

Function: Double Acting

Fail Safe: Fail to Closed

Air Pressure: 80 PSI (5.5 bar)

Feedback: 2x 24VDC Prox.

Key Applications

Hydraulic Oil Leak Test Automated Test Benches Process Automation Pneumatic Systems API 598 Zero Leakage

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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