3-Piece Stainless Steel Flanged Ball Valve

Technical Parameters:

Temperature range: - 20°C ~ + 180°C

Vacuum: 10 - 1 Torr

Working pressure: PN40

3-Piece Ball Valve - Swing-Out Maintenance Design

3-piece flanged ball valve in 304/316L with removable centre body for inline service. ANSI 150 / PN16 flanges, full port, fire-safe and anti-static options.

Model reference: 3-Piece Stainless Steel Flanged Ball Valve · size range DN15-DN100 · connection ANSI 150 / PN16 flange.

Key features

• Removable centre body for inline seat service
• Flange faces machined to Ra 1.6 µm for reliable gasket sealing
• Three-piece body: centre section swings out for inline seat replacement
• Four-bolt clamp design, no pipe movement required during service
• Precision-machined ball, mirror-polished to Ra 0.4 µm on request
• PTFE / RPTFE seats and graphite packing for high-cycle duty
• Fully repairable — every wear part is available as a spare

Typical applications

• Lines where maintenance windows are short
• Pharmaceutical and biotech process skids
• Food and dairy process piping
• Steam and thermal-oil circuits
• Test benches and pilot plants

Materials and standards

Body: CF8M / 316L; ends: threaded, flanged, welded or clamp; seats: PTFE, RPTFE or TFM; packing: PTFE / graphite; pressure 1000 PSI (PN63); temperature -29 °C to +230 °C depending on seat material; testing per API 598. All wetted parts are traceable to EN 10204 3.1 mill certificates, and each valve is pressure-tested before packing.

Frequently asked questions

How long does an inline seat change take?
With the line isolated and drained, a trained technician replaces seats and seals in roughly 15-20 minutes without cutting or re-welding the pipe.

Which seat material for steam service?
Choose RPTFE or TFM for continuous steam up to 200 °C, or graphite packing with metal-seated variants above that.

Browse all ball valves · ball valve maintenance procedure