Bronze gate valves resist seawater corrosion and biofouling, making them the classic choice for ship piping. Tin bronze (ZCuSn10Zn2) is cost‑effective; nickel‑aluminum bronze (C95800) offers higher strength for high‑velocity service.The main gate valves product names of China gate Valve Network include:,Lined Gate Valve,MZ44W Rising Stem Gas Quick Open&close ParallelMZ48W Manual Non-rising Stem City Gas Quick Gate Valve,Manual Knife-shaped Gate Valve,Manual Slurry ValveManual Wedge Copper Gate Valve,Manual Vacuum Isolated Wedge Gate Valve,Manual Welding Vacuum Wedge Gate Valve,Manual Wedge Gate Valve ,With Purge HoleNon-rising Stem Resilient Seat Seal Gate Valve,Non-rising Stem Wedge Cast Iron Gate Valve,Non-rising Stem Buried Wedge Gate Valve

2026 Price (RMB, incl. tax)

Bulk discounts available; non‑standard flanges (JIS/ANSI/DIN) cost extra.

Key Selection

• Size DN50 (57mm OD), pressure 0.6 or 1.6MPa.

• Standards: CB/T467-1995, JIS F7368, DIN 3201, or ANSI – flange bolt circles differ.

• Body: tin bronze (general) or C95800 (high‑velocity/impact).

• Stem: aluminum bronze or SS316.

• Seat: metal‑hardfaced, PTFE packing.

Installation & Maintenance

• Use NBR or PTFE gaskets – never asbestos.

• Tighten bolts crosswise to ~180 N·m. Use insulating gaskets when connecting to carbon steel to avoid galvanic corrosion.

• Cycle valve monthly; lubricate stem quarterly with marine MoS₂ grease.

• For stem leaks, tighten gland nuts evenly; for internal leakage, cycle a few times to flush debris.

Bottom line: A DN50 bronze gate valve costs RMB 188–2,000 in 2026. Match standard, material, and flange, lubricate regularly – expect over 10 years of service.

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