Steam Equipment

Pilot Piston Pressure Reducing Valve — Screwed CF8M (SS316) 25 mm (DN25)

Compact internally pilot and piston operated self-acting pressure reducing valve with screwed ends, ASTM A351 Gr. CF8M body, 25 mm (DN25) for small-bore steam and air reduction. Same pilot-controlled accuracy as flanged range in a threaded-end package for OEM and utility connections.

Key Applications

Small-Bore Steam ReductionEquipment Package PRVUtility Air Let-DownOEM Skid Supply
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Technical Specifications

Valve Type Self-acting pilot piston PRV, screwed end
Nominal Size 25 mm (DN25)
Body Material ASTM A351 Gr. CF8M
End Connection Screwed BSP / NPT
Pressure Rating Class 150 / Class 300
Pressure Reduction Ratio Up to 20:1
Trim CF8 / CF8M / SS 304 / SS 316
Manufacturer Supreme Valves India

Material of Construction (MOC)

Component / Part Available Materials
Body / Cap / Pilot Housing ASTM A351 Gr. CF8M
Main Valve / Seat / Sleeve ASTM A351 Gr. CF8 / CF8M
Piston / Pilot Internals SS 304 / SS 316
Diaphragm SS 316
Springs SS 302 / carbon steel
Gasket Aramid fibre, non-asbestos
Bolts ASTM A193 Gr. B8M / A194 Gr. 8M

Purchase Options

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Features & Benefits

Compact Screwed PRV

Pilot-operated accuracy in DN15–DN25 screwed format.

Self-Acting Control

No external power required; maintains constant downstream pressure.

CF8M (SS316) Body

ASTM A351 Gr. CF8M

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  • Valve type: Self-acting pilot piston PRV, screwed end
  • Size: 25 mm (DN25)
  • Material: ASTM A351 Gr. CF8M
  • Pressure class: Class 150 / Class 300

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