SPIRAX SARCO · ISOLATION VALVES
Spirax Sarco PVM Piston Valve – Carbon Steel Isolation Valve for Steam & Condensate
Spirax Sarco PVM piston isolation valve for steam & condensate systems. IBR compliant, 25 bar, carbon steel body. Available at PC Engineering India.
Overview
The Spirax Sarco PVM is a piston-type isolation valve engineered for reliable shut-off service in steam, condensate, and other liquid systems. Designed with a robust carbon steel body and stainless steel internals, the PVM delivers dependable performance in demanding industrial environments.
This valve is fully compliant with Indian Boiler Regulations (IBR), 1950, making it suitable for IBR-certified steam installations across Indian manufacturing plants. The piston design ensures tight isolation with minimal maintenance requirements, reducing downtime in critical process lines.
Available in sizes from ½" to 2" with multiple end connection options—screwed BSP, NPT, socket weld, and butt weld—the PVM offers flexibility for various piping configurations in boiler houses, process heating, and condensate recovery systems.
Key Features
- Piston-type isolation mechanism for reliable shut-off
- Carbon steel body and bonnet (ASTM A105N) with stainless steel internals
- Maximum operating pressure: 25 bar g at 226°C saturated steam
- IBR compliant for Indian boiler installations
- Multiple connection options: BSP, NPT, socket weld, butt weld
- Operating temperature range: -29°C to 226°C
- Graphite laminate sealing rings for high-temperature sealing
- Compact design suitable for installation in any plane (handwheel above body)
Specifications
| Parameter | Value | |||||
|---|---|---|---|---|---|---|
| Sizes Available | ½", ¾", 1", 1¼", 1½", 2" | |||||
| Maximum Operating Pressure (PMO) | 25 bar g | |||||
| Maximum Operating Temperature (TMO) | 226°C | |||||
| Minimum Operating Temperature | -29°C | |||||
| Max Cold Hydraulic Test Pressure | 37.5 bar g | |||||
| Body & Bonnet Material | Carbon Steel ASTM A105N | |||||
| Piston Material | Stainless Steel EN 1.4401 / AISI 316 | |||||
| Sealing Rings | Graphite Laminate with Stainless Steel | |||||
| Screwed Connections | BSP (BS 21 / DIN 2999) or NPT (ASME B1.20.1) | |||||
| Socket Weld Ends | ASME B16.11 | |||||
| Butt Weld Ends | EN 12627:1999BW / ASME B16.25 | |||||
| Compliance | Indian Boiler Regulations, 1950 | |||||
| Size | ½" | ¾" | 1" | 1¼" | 1½" | 2" |
| Kv | 3 | 4.5 | 8.5 | 12 | 20.5 | 32 |
| Size | A (mm) | B (mm) | B1 (mm) | C (mm) | Weight (kg) | |
| ½" | 85 | 92 | 112 | 75 | 1.1 | |
| ¾" | 100 | 102 | 142 | 95 | 1.6 | |
| 1" | 120 | 134 | 174 | 115 | 2.8 | |
| 1¼" | 140 | 160 | 196 | 150 | 4.0 | |
| 1½" | 160 | 180 | 220 | 150 | 6.5 | |
| 2" | 185 | 210 | 265 | 201 | 15.0 |
Applications
The Spirax Sarco PVM piston valve is widely used in:
- Boiler houses – steam isolation and shut-off duties - Process heating systems – steam and condensate line isolation - Condensate recovery systems – reliable shut-off for hot condensate - Chemical and pharmaceutical plants – process steam applications - Textile and paper industries – steam distribution networks - Food and beverage processing – sanitary steam systems requiring IBR compliance
Frequently Asked Questions
Get a Quote
Contact PC Engineering for pricing, availability, and technical support for the Spirax Sarco PVM Piston Valve. Call us or fill in our inquiry form — our engineers will respond within 24 hours.
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