C95500 Al-bronze Gate Valve
C95500 Al-bronze Gate Valve - Image 2
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C95500 Al-bronze Gate Valve

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Description

TECHNICAL DATA SHEET
PRODUCT: ALUMINUM BRONZE GATE VALVE, FLANGED OR THREADED ENDS

1. VALVE DESCRIPTION

  • Type: Gate Valve (Solid Wedge or Parallel Slide)

  • Operation: Manual (Handwheel)

  • Design Standard:

    • Flanged: API 602 / ASME B16.34 / MSS SP-80

    • Threaded: ASME B1.20.1 (NPT) / BS 21 (BSP) / MSS SP-80

  • Pressure Rating: ASME 150 LB (PN 20)

  • Body/Bonnet: Bolted Bonnet (BB)

  • Stem Operation: Outside Screw & Yoke (OS&Y)

  • Seat Design: Renewable Seat Rings (RS)

2. SIZE AND CONNECTION OPTIONS

Parameter Flanged Ends Threaded Ends
Nominal Size NPS ½” to 4″¹ NPS ½” to 2″¹
End Connection ASME B16.5 Raised Face (RF) NPT (ASME B1.20.1) or BSP (BS 21)
Pressure Class 150 LB (PN 20) 150 LB (PN 20)

*¹ Larger threaded valves (e.g., NPS 2½”) are non-standard; confirm feasibility.*

3. MATERIALS OF CONSTRUCTION

Component Material Standard Grade
Body/Bonnet ASTM B148 C95800 (Al-Bronze, 9% Al)
Gate ASTM B148 C95800
Seat Rings ASTM B148 C95800 (Renewable)
Stem ASTM B124 / B283 C63000 (Al-Ni Bronze)
Stem Nut ASTM B505 C93200 (SAE 660 Bronze)
Yoke ASTM A536 65-45-12 Ductile Iron
Bolting ASTM A193 B7 (Carbon Steel) / B8 (SS)²
Gasket Spiral Wound SS316/Graphite (Flanged)
Packing Flexible Graphite or PTFE –

*² For corrosive environments, specify SS bolting (A193 B8/B8M).*

4. DESIGN FEATURES

  • Ends:

    • Flanged: ASME B16.5 RF drill pattern.

    • Threaded: Tapered threads (NPT/BSP) with thread protectors.

  • Seats: Renewable seat rings (RS) secured by retaining rings.

  • Stem Seal: Adjustable gland packing (Graphite/PTFE).

  • Backseat: Integral to bonnet for stem seal under pressure.

  • Operation: Rotating handwheel lifts stem/gate (OS&Y design).

5. TESTING & CERTIFICATION

Test Standard Pressure (Flanged) Pressure (Threaded)
Shell Test API 598 225 PSI (1.5x 150#) 300 PSI³
Seat Test API 598 165 PSI (1.1x 150#) 165 PSI
Backseat Test API 598 165 PSI 165 PSI
Leakage Class API 598 Class IV (Metal-to-Metal)

*³ Threaded valves: Shell test pressure = 2x max working pressure (per API 598).*

6. DIMENSIONS & FINISH

  • Face-to-Face: ASME B16.10 (Flanged) / Manufacturer Std (Threaded).

  • Flange Dimensions: ASME B16.5, 150 LB RF.

  • Surface Finish:

    • External: As-cast or primer-coated (RAL 5015).

    • Internal: Smooth bore (Ra ≤ 3.2 μm).

    • Threads: Coated with anti-galling compound.

7. MARKING & PACKING

  • Marking:

    • Per MSS-SP-25: Size, Pressure Class, Material (e.g., “AL-BZ”), Flow Arrow, Manufacturer ID.

  • Packing:

    • Flanged: Wooden crate + VCI paper + flange covers.

    • Threaded: Cardboard box + thread protectors.

8. OPTIONS (UPON REQUEST)

  • Connections: RTJ flanges, Socket Weld (SW), Buttweld (BW).

  • Materials:

    • Stem: Monel K500 / SS316.

    • Bolting: A320 L7 (Low-Temp) / A193 B8M (SS316).

  • Certifications: NACE MR0175, DNV-GL, PED 2014/68/EU.

  • Accessories: Locking handwheel, position indicator, gear operator.

Key Notes for Procurement:

  1. Threaded Valve Limits: Max NPS 2″ for standard designs; confirm pressure derating for sizes >1″.

  2. Corrosion Protection: Specify SS bolting (A193 B8M) for seawater/offshore use.

  3. Standards: API 602 covers flanged valves ≤ NPS 4″; threaded valves follow MSS SP-80.

  4. Testing: Threaded valves require higher shell test pressure (see API 598 Sec 5.3).

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