Description
The Global Water Solutions PressureWave™ Inline 4-Liter Pressure Tank is a compact, maintenance-free diaphragm pressure vessel designed to improve the performance and reliability of small pressurised water systems. Manufactured by Global Water Solutions (GWS), the PressureWave™ series is recognised worldwide for its advanced engineering, premium-quality materials, and exceptional durability.
Designed specifically for inline installation, the 4-liter model is ideal for compact booster pump systems, thermal expansion control, hydraulic hammer protection, reverse osmosis systems, water filtration equipment, coffee machines, and other applications where stable water pressure is essential. The tank incorporates a 100% high-grade butyl diaphragm and a virgin polypropylene liner, ensuring complete separation of water and compressed air. This innovative design prevents waterlogging, maintains water quality, and delivers consistent pressure while reducing wear on pumps and plumbing components.
Constructed from heavy-duty carbon steel and protected by a durable dual-layer polyurethane paint finish, the PressureWave™ Inline 4L offers outstanding resistance to corrosion and harsh operating conditions. A patented stainless steel water connection provides a leak-free dual water/air seal, while the O-ring sealed brass air valve ensures long-lasting, maintenance-free operation.
Features:
- 4-Liter inline diaphragm pressure tank.
- Manufactured by Global Water Solutions (GWS).
- PressureWave™ Series.
- Compact inline design for space-saving installations.
- Premium 100% butyl diaphragm.
- Virgin polypropylene liner for superior durability.
- Complete separation of water and compressed air.
- Heavy-duty carbon steel construction.
- Dual-layer polyurethane-coated exterior for corrosion resistance.
- Patented stainless steel water connection.
- Leak-free O-ring sealed brass air valve.
- Reduces pump cycling and extends pump lifespan.
- Helps prevent hydraulic hammer.
- Ideal for thermal expansion applications.
- Factory pre-charged for quick installation.
- Suitable for potable drinking water systems.
- Maintenance-free operation.
- Manufactured to international quality standards.
Specification:
- Brand: Global Water Solutions (GWS).
- Series: PressureWave™.
- Model: PWB-4LX.
- Tank type: Inline diaphragm pressure tank.
- Nominal capacity: 4 Litres.
- Maximum working pressure: 10 Bar (150 psi).
- Factory pre-charge: 1.9 Bar (28 psi).
- Maximum operating temperature: 90°C.
- Internal membrane: High-grade 100% butyl diaphragm.
- Internal liner: Virgin polypropylene.
- Construction: Carbon steel shell.
- Water connection: 1″ BSPT Male.
- Height: 261 mm.
- Diameter: 162 mm.
- Colour: Almond.
- Application: Pressure boosting, thermal expansion, irrigation, and hydraulic hammer protection.
Applications:
- Small booster pump systems.
- Reverse osmosis systems.
- Thermal expansion control.
- Hydraulic hammer arrestors.
- Water filtration and purification systems.
- Coffee machines and beverage equipment.
- Water dispensers.
- Domestic water pressure stabilisation.
- Irrigation systems.
- Light commercial water systems.
Why Choose the PressureWave™ Inline 4-Liter Pressure Tank?
- Extends pump life by reducing unnecessary start and stop cycles.
- Maintains stable water pressure for improved system performance.
- Prevents waterlogging through complete water and air separation.
- Protects plumbing systems against hydraulic shock and pressure fluctuations.
- Provides a compact solution for installations where space is limited.
- Supports thermal expansion control in closed water systems.
- Requires minimal maintenance, reducing long-term operating costs.
- Manufactured using premium materials for maximum durability.
- Suitable for potable water applications.
- Backed by the trusted quality and reliability of Global Water Solutions.









