ASTM A105N Bellows Sealed Globe Valve, DIN 3356, 2 IN, CL300

Product Name: ASTM A105N Bellows Sealed Globe Valve
Design Standard: DIN 3356
Body Material: Forged Carbon Steel ASTM A105N
Size: 2 Inch, DN50
Pressure: Class 300 LB, PN50
End Connection: RF Flanged
Operation: Handwheel

The Bellows Sealed Globe Valve integrates advanced foreign technology with a double bellows design welded to the valve stem. This ensures stable operation and minimizes valve vibration, which can be caused by plug movement. The design also prevents stem leakage, even under high-temperature conditions, by keeping the stem isolated from the medium. The valve maintains excellent strength and toughness, offering a long service life with the capability of handling tens of thousands of operations. Its ergonomically designed handwheel makes operation convenient and extends the valve's life. The valve's plug-shaped design features a flat or cone sealing face, and the valve moves along the centerline of the fluid, ensuring minimal friction between sealing surfaces, resulting in increased durability and easy manufacturing. It is a widely used valve, particularly valued for its low opening height and reliability.

Technical Specification

» Nominal Diameter: DN15-DN50 (1/2-2 Inch)
» Design Pressure: PN16-PN64 (Class 150-600 LB)
» Materials:
   Body: ASTM A105N, A182 F304, F304L, F316, F316L, etc.
   Bellows: SS 304, SS 316, SS 316L, etc.
» End Connections: Flanged, Welded, or Threaded Ends
» Operation: Handwheel, Bevel Gear, Electric, Pneumatic
» Design and Manufacture: DIN 3356
» Inspection and Test: ISO 5208, EN 12266
» Flanged Ends Dimensions: DIN 2543, DIN 2544, DIN 2545
» Butt-Welded Ends Dimensions: EN 12627
» Face to Face/End to End: DIN 3202, EN 558-1, ISO 5752
» Pressure-Temperature Ratings: DIN 2401
» Test & Inspection: DIN 3230
» Temperature Range: -29°C to 595°C
» Medium: Water, Gas, Oil, etc.

Product Features

» Reasonable Structure: KOSEN bellows-sealed globe valves feature a well-thought-out design ensuring reliable sealing, excellent performance, and an aesthetically pleasing appearance.
» Broad Material Availability: These valves offer a wide range of cast body and trim materials, making them an economical choice for various processes and steam systems.
» Sealing Surface: The sealing surface is hard-faced with chromium alloy, providing excellent resistance to wear, corrosion, and friction, thus ensuring a longer service life and tight shut-off with double sealing for flawless operation.
» Stem: The stem undergoes quenching and tempering with nitriding treatment to enhance its anti-corrosion and anti-friction properties.
» Optional Stem Position Indicator: The stem position indicator is available to provide a clear visual indication of the valve's on/off status, aiding in monitoring and operation.