What is a 1/2" ball valve with pneumatic actuator used for?

A 1/2 inch (DN15) pneumatic actuated ball valve is used for automated on/off control in hydraulic test systems, process automation, pneumatic and hydraulic circuits, and industrial pipeline applications. The 1/2 inch size provides the highest flow capacity in this series, making it suitable for main supply lines, higher flow-rate applications, and hydraulic oil pressure leak test systems requiring faster cycle times.

What is the Cv (flow coefficient) of a 1/2" ball valve?

A 1/2 inch full-bore ball valve typically has a Cv of 8-12 depending on the design. This provides significantly more flow capacity than the 1/4 inch (Cv 2-3) and 3/8 inch (Cv 4-6) variants. The higher Cv means faster filling and draining cycles in hydraulic test systems, reducing overall test cycle time.

Can this 1/2" valve handle 100 bar hydraulic oil pressure at 90°C?

Yes, when specified with forged stainless steel (SS316/SS304) or carbon steel (A105) body, this 1/2 inch ball valve is rated for 100 bar (1450 PSI) working pressure at 90°C. The RPTFE (Reinforced PTFE) seat provides API 598 zero leakage with SAE 10 hydraulic oil. RPTFE resists seat extrusion at high differential pressures better than standard PTFE.

What actuator torque is needed for a 1/2" ball valve at 100 bar?

A 1/2 inch ball valve at 100 bar typically requires 5-8 Nm of torque. The dual scotch yoke pneumatic actuator supplied with this assembly provides adequate torque at 5 bar (80 PSI) air supply with a safety factor of 1.5-2x. The actuator is sized to ensure reliable operation even under maximum differential pressure conditions.

Does Supreme Valves supply all three sizes (1/4", 3/8", 1/2") as a set?

Yes, Supreme Valves India supplies all three sizes as individual units or as a complete set for hydraulic leak test systems. All three sizes share the same actuator platform, solenoid valve specification (24VDC), and proximity switch configuration (2x solid-state, 24VDC) for consistent PLC integration across your entire test bench. Volume pricing is available for sets of 5 units per size.

1/2 inch Ball Valve with Pneumatic Actuator FNPT - Supreme Valves India

Pneumatic Actuated Ball Valve

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

Name: 1/2" 2-Way Ball Valve with Pneumatic Actuator & Position Feedback FNPT
Brand: Supreme Valves India
SKU: SV-BV-050-PA-FNPT-DA-FC
Price: 10500 INR
Availability: InStock
Rating: 4.8 (55 reviews)

1/2 inch 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. Highest flow capacity in the series.

Quick Specifications

Size: 1/2" (DN15)

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.

Cv Value: 8-12

Leakage: API 598 Zero

Key Applications

Hydraulic Oil Leak Test Main Supply Lines Automated Test Benches Process Automation API 598 Zero Leakage

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Detailed Technical Specifications

Product Type	2-Way Ball Valve with Pneumatic Actuator Assembly
Valve Size	1/2" (DN15 / 15mm bore)
Port Type	Full Bore / Standard Port
Connection Type	FNPT (Female National Pipe Thread)
Seat & Seal Material	RPTFE (Reinforced PTFE) - Chemical resistant, high-temperature rated
Body Material	SS316 / SS304 / Carbon Steel (A105) - as per application
Ball Material	SS316 Chrome Plated / SS304
Stem Material	SS316 / SS304
Cv (Flow Coefficient)	8-12 (full bore)
Actuator Specifications
Actuator Type	P Series Dual Scotch Yoke Pneumatic Actuator
Function	Double Acting (DA) with Spring Return
Fail Safe Position	Fail to CLOSED - Valve closes on air/power loss
Supply Air Pressure	80 PSI (5.5 bar) — operates reliably at 5 bar plant air
Solenoid Valve	24VDC, 5/2 way or 5/3 way (included)
Position Feedback
Proximity Switches	2x Solid State Proximity Switches (1 for Open, 1 for Closed)
Switch Voltage	24VDC
Switch Output	NPN / PNP (as per requirement)
Operating Conditions
Max Working Pressure	100 bar (1450 PSI / 10 MPa)
Max Temperature	90°C (194°F)
Media	Hydraulic Oil (SAE 10), Compressed Air, Water, Steam, Gas
Testing Standard	API 598 — Zero Leakage
Line Size Compatibility	15mm OD / 1/2" NPT pipe

Size Comparison: 1/4" vs 3/8" vs 1/2"

Specification	1/4" (DN8)	3/8" (DN10)	1/2" (DN15)
Bore Size	8mm	10mm	15mm
Cv (Flow Coeff.)	2-3	4-6	8-12
Line Size	10mm OD	12mm OD	15mm / 1/2" NPT
Max Pressure	100 bar	100 bar	100 bar
Actuator	Dual Scotch Yoke	Dual Scotch Yoke	Dual Scotch Yoke
Fail Safe	Fail to Close	Fail to Close	Fail to Close
Position Feedback	2x 24VDC	2x 24VDC	2x 24VDC

Application: Hydraulic Oil Pressure Leak Test

Maximum Flow Capacity

1/2" bore provides the highest Cv (8-12) in this series. Ideal for main supply lines, fast-fill applications, and test systems where cycle time is critical. Approximately 4x the flow capacity of the 1/4" variant.

Fail-Safe Operation

Double acting actuator with spring return ensures the valve fails to CLOSED position on air supply loss. Critical for safety in high-pressure hydraulic test systems to prevent uncontrolled oil release.

PLC Integration

Dual solid-state proximity switches (24VDC) confirm valve open/closed position. Same wiring configuration as the 1/4" and 3/8" variants for consistent PLC programming across all sizes on your test bench.

Hydraulic Oil Compatible

RPTFE seat provides API 598 zero leakage with SAE 10 hydraulic oil at 100 bar and 90°C. Reinforced PTFE resists seat extrusion under high differential pressure better than standard PTFE.

Test Pressure Requirements (API 598)

Test Type	Pressure	Medium	Standard
Hydrostatic Body Test	1.5x WP (150 bar)	Water	API 598
Hydrostatic Seat Test	1.1x WP (110 bar)	Water	API 598
Pneumatic Seat Test	6 bar (87 PSI)	Air / Nitrogen	API 598
Leakage Acceptance	ZERO LEAKAGE — No visible leakage permitted

Complete Assembly Includes

Ball Valve

1/2" 2-way, FNPT, RPTFE seat, full bore

Pneumatic Actuator

Dual scotch yoke, DA + spring return FC

Solenoid Valve

24VDC, 5/2 or 5/3 way directional

Position Feedback

2x solid-state proximity switches, 24VDC

Mounting Kit

Bracket, coupling, fasteners as per ISO 5211

Available in Other Sizes

1/4" (DN8)

Same specs — 10mm line size

View Details →

3/8" (DN10)

Same specs — 12mm line size

View Details →

1/2" (DN15)

Current page — highest flow capacity

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