SteamEraa India Private Limited is an Indian manufacturing company specializing in steam engineering products, industrial valves, and innovative solutions for efficient steam management.
SteamEraa India Private Limited is an Indian manufacturing company specializing in steam engineering products, industrial valves, and innovative solutions for efficient steam management.
The SPV21 Piston Valve is an industrial valve designed for controlling & isolating fluid flow in piping systems. Its piston-type operating mechanism moves within the valve assembly to regulate or stop the passage of the process medium. The valve is specified with a robust ASTM A216 Gr. WCB cast carbon steel body & flanged end connections suitable for the designated Class 150 & Class 300 configurations. Its compact construction is intended to support installation in industrial process, utility & steam service applications.
| Parameter | Specification |
|---|---|
| Product Name | Piston Valve |
| Model | SPV21 |
| Nominal Sizes | 15NB, 20NB, 25NB, 40NB, 50NB, 65NB, 80NB, 100NB, 125NB, 150NB & 200NB |
| Body Material | ASTM A216 Gr. WCB |
| Operating Principle | Axial Piston Movement Against Sealing Rings |
| Construction | Compact, Robust |
| Nominal Pressure Designation | Class 150 & Class 300 |
| End Connections | Flanged - ASME Class 150 & Class 300 |
| Internal Piston & Spindle Materials | AISI 304 |
| Seal Rings | Graphite with SS 304 |
Gland-Free Sealing Arrangement:
Eliminates the conventional stem packing gland,
reducing the need for routine packing adjustments.
The piston-and-ring arrangement is designed to provide
reliable shut-off performance.
Cost-Effective Maintenance:
A serviceable sealing assembly can help simplify
routine inspection and component replacement.
Reduced Sealing Surface Wear:
The piston-and-ring design helps minimize direct
sliding contact with the body sealing surface,
depending on the design and operating conditions.
Efficient Flow Isolation:
The piston mechanism provides a defined shut-off
arrangement for isolating compatible process fluids.
Thermal Expansion Accommodation:
The sealing arrangement can accommodate thermal
movement when designed with suitable clearances
and resilient components.
Controlled Leakage Performance:
The piston and seal ring arrangement is designed
to restrict leakage through the closed valve
and around the stem.
| Parameter | Class 150 | Class 300 |
|---|---|---|
| PMA (Maximum Allowable Pressure) | 19.6 bar(g) @ 38°C | 51.1 bar(g) @ 38°C |
| TMA (Maximum Allowable Temperature) | 425°C @ 5.5 bar(g) | 425°C @ 28.8 bar(g) |
| Cold Hydro Test Pressure | 29.4 bar(g) @ RT | 76.7 bar(g) @ RT |
Steam & Condensate Systems:
Isolation of steam distribution lines, condensate
piping and associated utility equipment, subject
to approved pressure-temperature limits.
Thermal Fluid Systems:
Isolation in heat-transfer fluid circuits where
the fluid and temperature are compatible with
the valve materials.
Water & Hot-Water Systems:
Industrial water distribution, heating circuits
and utility pipelines.
Compressed Air & Gas Systems:
Isolation of compatible gases within the
approved operating limits.
Process Industries:
Isolation of compatible process fluids in
manufacturing and plant utility systems.
Chemical & Industrial Fluid Services:
Applications subject to verification of chemical
compatibility with the body, piston, sealing rings
and other wetted components.
Power & Utility Plants:
Isolation duties in auxiliary service lines,
subject to application-specific engineering approval.
