Cast Steel Parallel Slide Blow Off Valve (Model CS-4)

Overview

High-pressure rack and pinion operated blow-off valve, engineered for steam boiler blowdown service. Features a cast carbon steel body (ASTM A216 Gr.WCB) with renewable seat and disc components. Utilizes expanded pure flexible graphite gland packing for superior seal integrity under thermal cycling. Designed for PN 25-class performance with IBR certification. Supplied with Form III-C certification and serviced for boiler plants across Nepal.

Features & Benefits

• ✓Rack and pinion operator allows for precise, rapid actuation, which is essential for effective boiler blowdown to manage total dissolved solids (TDS) without risking seat wire-drawing.
• ✓IBR certification and the mandatory Form III-C certificate provide the regulatory assurance required for high-pressure steam utility and power generation environments.
• ✓Parallel slide design ensures that the sealing force is independent of the pipeline pressure, preventing the valve from becoming stuck in the open or closed position due to thermal expansion or pressure surges.
• ✓Renewable seats and discs allow for restoration of the sealing surface during turnaround maintenance, significantly extending the service life of the valve body.
• ✓Expanded flexible graphite gland packing offers superior heat resistance and leak prevention compared to conventional asbestos-based packings, reducing fugitive emissions in high-temperature service.