English Views: 130 Author: DEYUAN 041 Publish Time: 2026-06-15 Origin: Site
Deyuan Marine, a premier global supplier of marine equipment and maritime solutions, today announced the successful delivery of its next-generation Pressure Water Tanks to several internationally renowned shipowners. Featuring superior manufacturing craftsmanship, highly automated control systems, and exceptional energy efficiency, this product line further solidifies Deyuan Marine's leading position in marine fresh and sanitary water supply systems.
As a core component of modern domestic and fresh water supply systems onboard, the operational stability of a pressure water tank directly impacts crew well-being and vessel safety. The delivered batch includes both drinking water and sanitary water pressure tanks across various capacities, fully compliant with the stringent certification standards of major classification societies such as CCS, LR, DNV, BV, and ABS.
Key Technical Highlights:
▶Upgraded Material & Anti-Corrosion: Fabricated using high-grade carbon steel with food-grade internal lining or premium stainless steel (316L/304), ensuring robust corrosion resistance and long-term clean water quality.
▶Intelligent Pressure Control: Equipped with fully automated pressure sensors and smart control boxes to achieve precise automatic regulation of air pressure and water levels, significantly reducing maintenance frequency.
▶Compact Modular Design: Optimized internal structure maximizes space efficiency, allowing for rapid installation and effortless troubleshooting within tight vessel engine rooms.
▶Enhanced Safety Features: Standard integration of high-precision safety valves, pressure gauges, and level indicators, all rigorously verified through rated and hydraulic pressure tests to guarantee absolute safety under extreme sea conditions.
"We fully understand the rigorous reliability demands placed on water supply systems during ocean-going voyages," said the Technical Director at Deyuan Marine. " The pressure water tanks delivered this time not only hit industry-leading benchmarks in technical performance but also flawlessly match our clients' vessel layouts through tailored designs. Moving forward, Deyuan Marine will continually adhere to our core philosophy of 'Quality First, Customer Foremost' to deliver cost-effective and dependable marine equipment solutions worldwide."
For more details regarding Deyuan Marine’s pressure water tanks and integrated water supply system solutions, please visit our official website or contact our sales team directly.
FAQ – Marine Pressure Water Tank (Hydrophore Tank)
Q1: What is marine pressure water tank?
Ans – Marine pressure water tank is a closed pressurized vessel used in shipboard water supply systems. It stores fresh water or seawater under compressed air pressure and ensures a steady supply of pressurized water for domestic use, sanitation, and other operational needs aboard vessels and offshore drilling platforms. Typical tank volumes range from 0.12 m³ to 3.0 m³, with a design pressure of 0.7 MPa and working pressure of 0.6 MPa.
Q2: How does a marine pressure water tank work?
Ans – The system works on a simple pressure-controlled principle. When the pump supplies more water than is being consumed, the excess water enters the tank and compresses the air trapped in the upper space, raising the system pressure. A pressure switch monitors the tank pressure and automatically controls the pump:
*When pressure drops to the lower set point (typically around 0.15–0.2 MPa), the pump starts and replenishes the tank.
*When pressure reaches the upper set point (typically around 0.3–0.4 MPa), the pump stops.
This automatic cycling maintains a constant water pressure throughout the vessel's distribution system with minimal user intervention.
Q3: How do I start up and operate the pressure water tank system?
Ans – Follow these steps for proper startup:
1. Pre-operation check: Ensure all piping connections are intact and control valves are fully open.
2. Initial filling: Start the pump in manual mode and watch the level gauge. Once the water level reaches about 70% of tank capacity (look for markings on the gauge), stop the pump.
3. Air charging: Charge the tank with compressed air using an air compressor or air bottle until the pressure gauge reaches the required setting (e.g., about 0.25 MPa for initial charge).
4. Automatic mode: Switch the pump to automatic mode and open the outlet valve. The system will now operate automatically.
Q4: Why does my pump start and stop frequently?
Ans – Frequent pump cycling is one of the most common issues with pressure water tanks. Possible causes include:
*Waterlogged tank: The tank has too much water and insufficient air. Drain some water and recharge with compressed air.
*Incorrect pressure settings: The pressure switch cut-in and cut-out points may be improperly adjusted.
*Faulty check valve: A malfunctioning non-return valve prevents the system from building pressure, causing the pump to run continuously.
*Air leaks: Leaks at seals, pipe joints, or gauge connections allow pressure to drop rapidly.
Solution: Check the air-to-water ratio first (the tank should not be more than 2/3 full of water), then inspect the pressure switch settings and check valve condition.
Q5: What should I do if the pump runs continuously and never stops?
Ans – A pump that never shuts off indicates the system cannot reach the upper pressure set point. Check the following:
1. Pressure gauge: Verify if the gauge is functioning correctly by testing with a separate gauge.
2. Check valve: Inspect the non-return valve – if it is faulty, water flows back and pressure never builds up.
3. Pressure switch setting: The cut-out pressure may be set too high for the pump's capacity – adjust it to a lower value.
4. Air charge: Excessive air in the tank can also prevent the pump from reaching cut-out pressure.
Q6: How do I check and adjust the air pre-charge pressure?
Ans – To check the tank's air pressure:
1. Completely isolate the tank and drain all water from it.
2. Depressurize the system completely before using a pressure gauge.
3. Remove the air valve cap and measure the pressure.
General guideline: The air pre-charge pressure (with no water in the tank) should be approximately 2/3 of the maximum system operating pressure. For example, if the system cuts out at 0.3 MPa, the pre-charge should be around 0.12–0.14 MPa.
Q7: What are the routine maintenance requirements?
Ans – Regular maintenance ensures reliable operation and extends service life:
Always disconnect power and wait 5 minutes before performing any maintenance. Do not allow the pump to run dry, as this can cause damage.
Q8: What are the safety precautions I must follow?
1. Never exceed maximum pressure: Do not exceed the tank's rated maximum pressure (e.g., 145 psi / 1000 kPa for 10 Bar tanks).
2. Safety valve: The safety valve is typically set to activate at 1.1 times the maximum working pressure (e.g., 0.33 MPa for a 0.3 MPa system) – never tamper with or disable it.
3. Depressurize before service: Always completely depressurize the tank before performing any inspection or maintenance.
4. No uncontrolled pneumatic testing: Never subject the tank to uncontrolled pneumatic pressure for testing purposes – this risks permanent deformation or violent rupture.
5. Monitor temperature: If pump or motor temperature exceeds 55°C, stop immediately and inspect.
6. Use proper PPE: Always wear appropriate personal protective equipment when operating or maintaining pressure equipment.
