Forged Bronze Globe Valve Threaded & Flanged for Marine High‑Pressure Seawater Pipeline

Forged Bronze Globe Valve is heavy‑duty shut‑off & throttling valve with forged bronze body for marine high‑pressure pipeline service.
Body material: high‑quality forged bronze alloy
End connection: NPT / BSPP threaded, flanged optional
Pressure rating: PN16‑PN25 / Class150‑200
Forged structure with dense texture, higher strength than cast bronze valve
Excellent anti‑corrosion performance for seawater and salt‑water environment
Realize pipeline shut‑off as well as medium flow throttling adjustment
Stable tight sealing, prevent medium leakage under pressure
Shock‑resistant & durable, long service life for harsh marine working condition
Easy manual operation, convenient installation and maintenance
OEM support for size and thread standard customization

Description
Shipping & Delivery

Forged Bronze Globe Valve

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:

Threaded Valve Limits: Max NPS 2″ for standard designs; confirm pressure derating for sizes >1″.
Corrosion Protection: Specify SS bolting (A193 B8M) for seawater/offshore use.
Standards: API 602 covers flanged valves ≤ NPS 4″; threaded valves follow MSS SP-80.
Testing: Threaded valves require higher shell test pressure (see API 598 Sec 5.3).