PUREVAL
PureVAL Piston Valves
Seat-less, glandless piston valves for steam, condensate, and high-temperature process applications. Manufactured by Mahavas Precision Controls Pvt. Ltd., Pune.
PUREVAL
Piston Valves Range
PureVAL piston valves are seat-less and glandless — the conventional seat and gland are replaced by lower and upper sealing rings. The inclined bonnet design ensures uniform flow contours and long service life even at temperatures up to 427°C. Available in screwed/SW and flanged configurations.
UNA Series — Carbon Steel
Full range from standard to extreme high-pressure applications. UNA 45 for high-capacity process plants; UNA 38/39 for power generation.
- ▸Body: Carbon Steel
- ▸Sizes: DN 15–65 (½”–2½”)
- ▸Pressure: PN 40 up to PN 160
- ▸Max Temp: 350°C (UNA 39)
Piston Valves- Flanged
PUREVAL
Piston Valve — Flanged
Precision Controls
Pressure Class: ANSI Class 150 & 300 (ASME B16.34)
End Connections: Flanged — RF, RJ, RTJ
Sizes: DN 15 – DN 100 (½” – 4″)
Body Material: Cast Carbon Steel A216 WCB / Stainless Steel A351 CF8M
Trim Material: Stainless Steel SS316
Sealing: PTFE / Graphite sealing rings (seat-less, gland-less design)
Operating Temp: Up to 427°C
Standards: API 602, ASME B16.34, BS 6364
Applications: High-pressure steam mains, boiler feed, process plant isolation
Piston Valves
PUREVAL
Piston Valve — Screwed / Socket Weld
Precision Controls
Pressure Class: ANSI Class 800 (BS 5352)
End Connections: Screwed (BSP / NPT) & Socket Weld
Sizes: DN 8 – DN 50 (¼” – 2″)
Body Material: Forged Carbon Steel A105 / Alloy Steel A182 F11/F22
Trim Material: Stainless Steel SS316
Sealing: PTFE / Graphite sealing rings (seat-less, gland-less design)
Operating Temp: Up to 427°C
Design: Inclined bonnet for uniform flow contours and extended service life
Applications: Steam, condensate, thermal oil, high-pressure process lines
Key Features
- ✔ Seat-less & Gland-less Design — Lower and upper sealing rings replace conventional seat and packing gland; eliminates leakage paths
- ✔ Inclined Bonnet — Uniform flow contours reduce turbulence and erosion; suitable for long-cycle operation
- ✔ High-Temperature Rated — Operates continuously up to 427°C without re-packing
- ✔ PTFE / Graphite Seals — Compatible with steam, condensate, thermal oil, and aggressive process fluids
- ✔ IBR Compliance — Available with IBR certification for Indian boiler and pressure vessel regulations
- ✔ Compact & Lightweight — Forged body (SW/Screwed) ideal for instrument and utility take-offs
Request a Quote for PureVAL Piston Valves
Tell us your size, pressure class, and end connection — we’ll provide a competitive quotation with lead time.
