Marine Valves

ABS Type Approved Marine and Naval Valves

Williams Valve Bronze MarineFrom commercial and naval ships to offshore platforms, marine valves are essential components in all types of vessels and structures. They control the flow of liquids and gases for critical systems operating in the demands of a saltwater environment.

All Williams Valves are designed, engineered, manufactured, and tested to meet or

exceed all applicable industry standards including ASTM, ASME, and MSS. We also are an ABS Type Approved manufacturer for several standard marine valves, including:

  • Cast Steel Marine T-Pat & Angle Globe
  • Bronze Marine T-Pat & Angle Globe
  • Marine Swing Check

At Williams Valve, we are one of the few US companies ready and willing to customize valve solutions for your unique needs. Whether your needs are for standard products from our well-stocked inventories or custom parts for modifications, contact our team today.

Key Design Challenges for Marine Valves

Whether for commercial shipbuilding, naval shipbuilding, or other military/defense uses, these types of valves face unique challenges that differentiate them from their land-based counterparts.

  • Corrosion Resistance
    The most significant challenge in the marine environment is corrosion, primarily from seawater. Valves exposed to saltwater must be constructed from highly corrosion-resistant materials. Stainless steels, alloys, and bronze are common. For MilSpec projects, materials like Monel, Titanium, and specific high-strength, corrosion-resistant stainless steels are often mandated.
  • Shock and Vibration
    Ships, especially naval vessels, are constantly subjected to dynamic forces from engine vibrations, wave action, and in military applications, shock from explosions or weapon firing. Valves must be designed and tested to withstand these forces without leakage or failure. US Navy standards like MIL-S-901 (for high-impact shock) and MIL-STD-167 (for mechanical vibration) involve rigorous testing, including hammer blows for shock and sustained shaking for vibration.
  • Pressure and Temperature Extremes
    Marine systems can involve a wide range of pressures and temperatures, from cryogenic LNG systems to high-temperature steam lines in propulsion systems. Valves must maintain integrity across these extreme variances.
  • Fire Safety
    For fuel lines, cargo lines, and systems handling flammable materials, valves must be fire-safe,” meaning they can maintain their sealing integrity for a specified period when exposed to fire. This is typically tested to standards like ISO 10497 or API 607.
  • Space and Weight Constraints
    Ships have finite space and strict weight limitations. Compact and lightweight valve designs are often preferred, especially in confined areas like engine rooms or submarines. Wafer-style valves such as swing check are common for this reason.
  • Reliability and Maintainability
    Downtime at sea can be costly and dangerous. Marine valves must be highly reliable and, where possible, designed for easy in-situ maintenance and repair.

Design Adaptations for Marine Valves

All standard industrial valve types are used in marine applications, but their design and material selection are adapted for the marine environment. These adaptations typically include:

  • Gate Valves: Non-rising stem for space, fire-safe designs, and corrosion-resistant materials.
  • Globe Valves: Robust construction for high temperatures and pressures, Y-pattern designs for reduced pressure drop, and materials resistant to erosion from steam.
  • Ball Valves: Quarter-turn rapid operation, compact design, fire-safe options, and highly corrosion-resistant materials.
  • Check Valves: Swing designs are common, often chosen for low pressure drop and resistance to slamming.
  • Emergency Shut-Off Valves: Automated, fail-safe operation, fire-safe certified, and capable of remote activation from multiple points.

Available ABS Type Approved Marine Valves

  • Cast Steel Marine Wedge Gate
  • Bronze Marine Wedge Gate
  • Cast Steel Marine T-Pat & Angle Globe
  • Bronze Marine T-Pat & Angle Globe
  • Marine Swing Check

Cast Steel Drawings for Our Marine Valves

  • Cast Steel Marine Flanged Angle Valves 150lb Aluminum Bronze Trim
  • Cast Steel Marine Flanged Swing Check Valves 150lb Aluminum Bronze Trim
  • Cast Steel Marine Flanged Globe Valves 150lb Aluminum Bronze Trim
  • Cast Steel Marine Flanged Gate Valves (Non-Rising Stem) 150lb Aluminum Bronze Trim & API Trim 8
  • Cast Steel Marine Flanged Gate Valves (Rising Stem) 150lb Aluminum Bronze Trim

Special Considerations for Naval/Military Shipbuilding

Naval vessels such as submarines, destroyers, aircraft carriers present even more stringent requirements due to their mission-critical nature and potential for combat. Valves must meet MilSpec standards to ensure extreme durability and reliability.

All of our military specification valves are designed, engineered, and manufactured right here in our New York facility. We offer compliant valves for:

  • MIL-V-18110 (Gates)
  • MIL-V-22052 (Globes)
  • MIL-V-18436 (Swing Checks)

US Naval Valve Supplier Since 1918

At Williams Valve, we’ve proudly provided naval valves since we first opened our doors. Our legacy began by manufacturing these valves for US defense projects, and we continue that vital commitment to this day. Partner with us for unparalleled expertise and dedication in marine valve supply.