2-1/2" 300LB Cage‑Guided Pressure Balanced Globe Control Valve

2-1/2″ 300LB Cage‑Guided Pressure Balanced Globe Control Valve

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Description

Technical Data Sheet – 2-1/2″ 300LB Cage‑Guided Pressure Balanced Globe Control Valve

1. General Information

  • Valve Type: Cage‑guided, pressure‑balanced, straight‑through cast globe control valve.

  • Nominal Size: 2‑1/2 inches (NPS 2.5 / DN65).

  • Pressure Rating: ASME Class 300.

  • End Connections: Flanged per ASME B16.5 (RF, RTJ, FF optional); or Butt‑weld ends per ASME B16.25.

  • Design Standard: ASME B16.34.

  • Face‑to‑Face Dimension: Per IEC 60534‑3‑1 / ASME B16.10.

2. Performance Specifications

  • Operating Temperature Range:

    • Standard bonnet: –17°C to +230°C.

    • Extended bonnet: –45°C to –17°C and +230°C to +566°C.

    • Special extended bonnet: –100°C to –45°C.

    • Integral cast/welded bonnet: –196°C to –100°C.

  • Service Media: Steam, water, oil, gases, and chemical fluids.

  • Flow Characteristic: Equal percentage (EQ%) or Linear.

  • Rangeability: Up to 50:1.

  • Leakage Class: Metal seat – Class IV or Class V per ANSI/FCI 70‑2.

  • Travel: Typical 38 mm (1.5″) for this size.

3. Bill of Materials

Component Standard Material Specification / Remarks
Body WCB (carbon steel) / CF8M (316 SS) ASTM A216 Gr.WCB / ASTM A351 CF8M
Bonnet WCB / CF8M Same as body material
Plug 316 SS Pressure‑balanced design with balancing holes
Seat Ring 316 SS Hardfacing optional (e.g. Stellite)
Cage 316 SS Guides plug and determines flow characteristic
Stem 316 SS Rolled threads, high strength
Piston Rings Graphite / PTFE Seal between plug and cage
Bonnet Gasket 316 / graphite spiral wound With inner and outer rings
Packing PTFE V‑ring / Graphite Low‑emission packing available
Bonnet Bolts A193 B7 / A194 2H Carbon or alloy steel

4. Dimensions & Weight (Reference Values)

Note: Dimensions below are typical based on industry standards (e.g. ISA 75.08.05). Exact values vary by manufacturer.

  • Face‑to‑Face Length: Approx. 337 mm (13.25 in).

  • End‑to‑End Length: Same as face‑to‑face.

  • Center‑to‑Top of Flange: Depends on valve model and bonnet type.

  • Approximate Weight: 80 – 100 kg (without actuator).

5. Typical Accessories & Options

  • Actuator: Multi‑spring diaphragm pneumatic actuator (direct / reverse acting), or electric actuator.

  • Positioner: Pneumatic, electro‑pneumatic (E/P), or smart positioner.

  • Other accessories: Filter regulator, solenoid valve, limit switch, air lock relay, position transmitter, etc.

  • Special trims:

    • Noise reduction trim (Whisper Trim).

    • Anti‑cavitation trim (Cavitrol Trim).

    • Bellows seal.

Important Notice
This technical data sheet is a reference based on general industry designs and standards (such as Fisher, Masoneilan, Samson, etc.). Exact dimensions, Cv/Kv values, material options, and performance data must be confirmed by the valve supplier for the specific service conditions. For procurement or engineering purposes, always consult the manufacturer for the final, project‑specific technical data sheet.

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