Ball Valve Threaded - Type FS2 | ADLER

ADLER FS2 Threaded Ball Valve

The ADLER FS2 is a two-piece, threaded, full-bore ball valve machined from round steel bar. It is used on small-bore process and utility lines where threaded connections and high pressure ratings are required.

Technical Characteristics

• Sizes: ¼”–3”
• Pressure rating: PN40–PN210 / Class 800–3000
• Body materials: ASTM A105, ASTM A479 Type 304, ASTM A479 Type 316
• Threaded ends: ISO 7RP / GAS or ASME B1.20.1 / NPT
• Seat: PTFE
• Double sealing at body/end junction
• Chevron stem packing
• Anti blow-out stem
• Antistatic device
• Top flange: ISO 5211 for actuator mounting

Standards and Certifications

Design and construction according to EN 12516-2, ISO 14313, ANSI B1.1, DIN 3202 M3 and ASME B16.34. Available executions include fire-safe ISO 10497/API 607, BS 6755/API 607/6FA, PED, ATEX, SIL 3 and ISO 15848 Class A.

Sealing and Material Options

• PTFE seats with glass, carbon, stainless steel or bronze filler
• Stem O-ring option
• Stem extension or cryogenic extension
• Degreasing for oxygen service according to ISO 23208
• Special alloys: Hastelloy, Titanium, Monel

Actuation Options

• Oval hand lever or gearbox
• Pneumatic actuator
• Electric actuator
• Pneumatic or electropneumatic positioner

Typical Applications and Media

Suitable for water, compressed air, process gases, fuels, chemical liquids and high-pressure auxiliary systems. Common duties include isolation on instrument air headers, fuel gas skids, chemical injection lines, high-pressure utility headers and packaged process units.

Operational Considerations

Seat and seal selection should be checked against fluid compatibility, pressure, operating temperature, cycling frequency and required leakage class. Filled PTFE seats are used where improved wear resistance or dimensional stability is required. Stem packing and body/end sealing arrangements are relevant for fugitive-emission control and maintenance planning.

Variant Selection

The FS2 is generally selected instead of the ADLER FP2 when the line size is small, threaded end connections are acceptable, and the required pressure rating extends up to PN210 or Class 3000.

FAQ

• Is the FS2 full bore? Yes. It is a full-bore ball valve, reducing pressure drop compared with reduced-bore designs.
• Can it be automated? Yes. The ISO 5211 top flange allows direct mounting of pneumatic or electric actuators.
• Can it be used in hazardous areas? ATEX versions are available when required by the area classification and project specification.