Uni Klinger Piston Valve
Seatless & Glandless Piston Valves: Superior Leak-Free Fluid Isolation
Traditional globe valves often suffer from gland leaks and seat erosion, leading to steam loss, rising fuel bills, and increased $\text{CO}_2$ emissions. The Seatless & Glandless Piston Valve is an advanced evolution of the standard globe valve designed to eliminate internal seat erosion and external stem leakage entirely.
Featuring Leakage Class VI (Bubble-Tight) shutoff technology, these valves use a cylindrical piston and resilient sealing rings instead of a conventional metal-to-metal seat, delivering exceptional long-term tightness across steam, gas, and chemical supply lines.
Core Operating Benefits & Features
- Seatless & Glandless Technology: Replaces conventional gland packing with upper and lower sealing rings to prevent both line-to-atmosphere leakage and port-to-port bypass.
- Erosion-Free Sealing Surfaces: The piston's sealing faces are protected from direct media flow during opening and closing, eliminating seat scouring and erosion.
- Belleville Washer Thermal Compensation: Integrated Belleville springs maintain constant, optimal pressure on the sealing rings, compensating for thermal expansion and contraction during temperature cycling.
- Significant Energy & Emissions Savings: Prevents costly steam and fuel losses, directly reducing factory operating expenses and CO₂ → Carbon Dioxide emissions.
- In-Line Serviceability: Designed for low maintenance and easy, economic ring replacement without removing the valve body from the pipeline.
Technical Specifications
|
Parameter |
Specification Details |
|
Metric Sizes |
DN 15, 20, 25, 32, 40, 50 mm |
|
Imperial Sizes |
½", ¾", 1", 1¼", 1½", 2" |
|
Pressure Ratings |
Class 150 (#150), Class 300 (#300), PN40 |
|
Body Material |
ASTM A216 Gr. WCB (Standard) / ASTM A351 CF8M (On Request) |
|
End Connections |
Flanged Ends to ASME B16.5 |
|
Overall Length |
ASME B16.10 Standard |
|
Shutoff Class |
ANSI/FCI 70-2 Class VI (Bubble-Tight) |
Target Applications
- Steam Distribution Mains: Prevents continuous energy loss on steam headers, drip lines, and isolation manifolds.
- Thermal Oil & Fuel Oil Lines: Reliable, leak-free isolation for boiler fuel firing loops and heat transfer media.
- Industrial Gas Lines: Secure containment for compressed air, utility gases, and non-toxic process lines.
- Clear Liquid Systems: High-efficiency shut-off across general industrial fluid processing and condensate systems.
