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KSB Forged Lift Check Class 800–4500 Carbon & Alloy Steel

A105, F22, F91. Spring-loaded disc. Bolted cover (800), seal-welded (1500+). Up to 776 bar. NPS ¼–2. Horizontal only.

Carbon & Alloy SteelClass 800, 1500, 2500, 4500NPS ¼–2

Specifications

ParameterSpecification
SeriesSICCA 800-4500 PCF
Body MaterialA105/LF2/F22/F91
Pressure ClassClass 800, 1500, 2500, 4500
Size RangeNPS ¼–2
Max Temperature650°C (F91)
Max Pressure776 bar (11250 psi)
Design StandardAPI 602 / ASME B16.34
End ConnectionsSocket Weld, Threaded, Butt Weld
ConstructionBolted cover (800), seal-welded (1500+), spring-loaded disc
Trim / SealingIntegral ST6 seat
✓ API 602 / ASME B16.34

Material & Applications

Why Carbon & Alloy Steel: Spring-loaded disc ensures positive closure at low flow. Horizontal only (disc could jam vertically).

Typical applications: Small-bore backflow prevention: instrument lines, drain check, HP bypass, boiler blowdown. Horizontal installation only.

Pressure/Temperature Ratings

RatingPressure at Temperature
A105 800136 bar @ 38°C105 bar @ 316°C76 bar @ 425°C
F91 4500776 bar @ 38°C625 bar @ 316°C376 bar @ 538°C149 bar @ 650°C

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Other Variants

Forged SS Lift Check Class 4500 All Check Valves →

Service Area

Pune, Ahmednagar & Beed.

Carbon & Alloy Steel Check Valve FAQs

Swing vs lift check?
Swing: hinge disc, horizontal/vertical-up, lower drop. Lift: spring-loaded, horizontal only, positive closure at low flow. Lift is standard for small-bore forged valves.

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