DN25-PN25-RF Pneumatic Globe Valve

Description

Material: A105N (Forged Steel, Normalized)
Size: DN25 | Pressure: PN25 | Connection: Flanged RF

Item	Specification
Valve Type	Pneumatic Globe Valve, Bolted Bonnet, Outside Screw & Yoke (OS&Y)
Body Material	A105N – Forged Carbon Steel, Normalized (improved impact toughness)
Nominal Size	DN25 (1”)
Pressure Rating	PN25 (Class 150 equivalent; also suitable for Class 300 with design verification)
End Connection	Flanged, Raised Face (RF)
Flange Standard	ASME B16.5 / HG/T 20592 (or as specified)
Design Standard	ASME B16.34 / API 602 (for forged small bore valves)
Face-to-Face	ASME B16.10 / EN 558

Component	Material	Remarks
Body	A105N	Forged steel, normalized – superior strength and low-temperature toughness
Bonnet	A105N	Forged, bolted bonnet design
Disc / Plug	F6a (13Cr) + Stellite	Hardfaced for wear resistance; optional 304/316 SS
Stem	F6a (13Cr)	Rolled threads, hardfaced; optional SS
Seat Ring	Integral or threaded F6a + Stellite	Metal seated (Class V shut-off)
Packing	Flexible Graphite + SS braid	Low emission, high temperature
Gasket	Spiral Wound (SS + Graphite)	For bonnet flange seal
Bolting	A193 B7 / A194 2H	For pressure-containing bolted joints

Parameter	Data
Actuator	Piston type, single-acting (spring return) or double-acting
Air Supply	0.4 – 0.7 MPa (60 – 100 psi)
Action	Fail Closed (air to open) / Fail Open (air to close)
Accessories	Solenoid valve, limit switch, filter regulator, positioner (optional)
Air Connection	1/4″ NPT or G1/4

Forged Steel A105N – Dense grain structure, no porosity, ideal for high-pressure, high-temperature, and low-temperature services.
Metal Seating (Stellite) – ANSI/FCI Class IV or V shut-off, excellent for steam, hydrocarbons, and abrasive media.
Pneumatic Actuation – Fast, remote automated control; fail-safe options available.
Compact & Rugged – Small footprint, suitable for critical piping systems.
Low Emission Packing – Flexible graphite packing reduces fugitive emissions.