Protecting Your Water Network With Precision, Expertise & Proven Engineering

Pressure transients—commonly known as water hammer—are among the most destructive hydraulic events in water and wastewater systems. Sudden changes in flow caused by pump trips, valve closures, power failures, or network failures create severe positive and negative pressure waves that can lead to:

• Pipeline bursts and structural failures

• Pump and valve damage

• Air pocket formation

• Service interruptions

• Costly emergency repairs

• Safety hazards for operators and the public

With nearly 30 years of experience, BIMEX provides one of the region’s most advanced surge-protection engineering services—combining expert hydraulic modelling, custom surge-vessel design, and fully in-house manufacturing to deliver complete and reliable water-hammer protection systems.

Our Expertise in Hydraulic & Surge Analysis

Backed by decades of experience, BIMEX’s engineering team uses state-of-the-art transient analysis software to simulate hydraulic behavior under all operating conditions. Our in-house specialists provide a complete diagnostic of your pipeline network, including:

• Transient flow simulations (pump start/stop, power failure, valve operations)

• Positive and negative pressure wave prediction

• Cavitation and vacuum risk assessment

• Surge magnitude and frequency analysis

• Air management and air-valve sizing

• Required vessel sizing and pre-charge calculations

• High-accuracy reporting with recommendations

Every project receives a comprehensive hydraulic analysis report, including all surge scenarios, risk evaluations, and equipment specifications needed to achieve safe, stable operation.

Complete BIMEX Surge-Protection Solutions

Using the findings from our hydraulic analysis, BIMEX designs and delivers complete surge-protection systems. All solutions are fully engineered, manufactured, and tested in-house, ensuring unmatched quality and performance.

✔ Compressor Type Surge Vessels

Engineered for large and complex networks requiring continuous regulation.

• Integrated air-compressor system

• Stable pre-charge under fluctuating conditions

• Ideal for long transmission mains and critical stations

• Capacities up to 250,000 liters

• ASME Sect. VIII Div. 1 certified vessels

✔ Bladder Type Surge Vessels (WRAS Approved)

Reliable, low-maintenance solution for potable water and industrial networks.

• High-performance replaceable bladder

• Air-water separation for long-term stability

• Compact footprint and easy installation

• Ideal for municipal distribution and medium-capacity stations

✔ Dip Tube Type Surge Vessels

Hybrid, self-charging design perfect for systems with intermittent flow.

• No compressor or bladder required

• Automatic pre-charging during pump restart

• Ideal for flat and downward-sloping terrains

• High reliability for sewage, irrigation, and HVAC system

✔ Customized Surge Vessels

When standard designs are not enough, BIMEX develops fully customized surge-protection systems that can combine multiple technologies:

• Dip Tube + Compressor

• Dip Tube + Bladder

• Open-way surge vessels

Custom systems are engineered to match the exact hydraulic profile of your network, increasing stability and minimizing lifecycle cost.

Designed & Manufactured in BIMEX’s World-Class Facilities

All surge vessels—standard or customized—are manufactured in BIMEX’s facilities in Cairo, Obour City, Suez, and Dammam (Saudi Arabia) using advanced equipment:

• CNC dishing & flanging machines

• Automatic SAW welding systems

• CNC plasma cutting

• Plate rolling (3-roll & 4-roll)

• In-house hydrostatic pressure testing

• Non-destructive testing (NDT) capabilities

Vessels are built with diameters of up to 5000 mm, thicknesses of 60 mm, and capacities exceeding 120 m³, meeting ASME Section VIII Div.1 and other international standards.

Approved by Leading Water Authorities

BIMEX surge-protection systems are approved by:

• NOPWASD – Egypt

• National Water Company (NWC) – Saudi Arabia

• Saudi Irrigation Organization (SIO)

• Several municipal and industrial authorities across the MENA region.

Integrated Auxiliary Components

To ensure total system reliability, BIMEX supplies all required valve and control components:

• BIMEX Air Release & Vacuum Valves (BX4000 Series)

• Control Valves (BX9000 Series)

• Non-Slam Check Valves

• Gate & Butterfly Valves

• Pressure transmitters & safety devices

These components are selected and calibrated according to the hydraulic analysis, ensuring a fully integrated surge-protection package.

Engineering Support, Commissioning & After-Sales Services

BIMEX provides full lifecycle support:

• On-site commissioning

• Valve calibration and vessel pre-charging

• Training for operators & engineers

• Periodic inspection and maintenance

• Warranty support anywhere in the MENA region

Our teams support projects across Egypt, Saudi Arabia, Kuwait, and the wider region, ensuring safe and reliable start-up of every system.

Why Choose BIMEX?

• Over 25 years of surge-protection expertise

• In-house hydraulic modelling & engineering

• Full manufacturing control (design → forming → welding → testing)

• ASME, NSF, WRAS, UL, FM-accredited company

• Approved by major water authorities

• Proven track record in mega-projects

When protecting your network from water hammer, precision matters — and BIMEX delivers it.

Request a Hydraulic Analysis or Technical Consultation

Let our engineers help you design a resilient, safe, and efficient surge-protection system tailored to your pipeline.