WATEX Vertical and Horizontal Foam Bladder Tank – UL

WATEX foam bladder tank with ratio controller, UL listed and tested to UL 162, available from AZEIDK in Saudi Arabia in vertical or horizontal designs.

The tank stores foam concentrate in a flexible bladder inside a steel pressure vessel. The fire water pressure itself pushes the concentrate to the ratio controller, which mixes it with water at the required ratio. No foam pump and no external power are needed.

Approval (per the UL certificate):

• UL certificate EX29807, category “Proportioners, Foam Concentrate”, to UL 162, issued 3 June 2026.
• It covers the ratio-flow controller with ASME bladder tank: horizontal, 264 to 3963 gallons, and vertical, 53 to 1982 gallons, with ratio flow controller models WTX-BT and WTX-SS.

Technical data (per the manufacturer’s catalogue):

• Nominal capacity: vertical 200 to 7,500 L; horizontal 1,000 to 15,000 L.
• Rated pressure: 175 psi (12.3 kg/cm²).
• Minimum working pressure: 30 psi (2.1 kg/cm²).
• Design pressure: 13.75 kg/cm².
• Hydrostatic test on every tank: 18.5 kg/cm² (1.5 × rated pressure).
• Operating temperature: 2 °C to 65 °C.
• Design code: ASME Section VIII Division 1.
• Shell and dished ends: SA-516 Gr. 70, 2:1 ellipsoidal.
• Bladder: nitrile (Buna-N), fabric reinforced, replaceable on site through the manhole.
• Ratio controller: 65 to 200 NB.
• End connections: flanged, ASME B16.5 Class 150.
• Finish: fire red RAL 3000.
• Warranty: 5 years per the manufacturer.

Certificates and datasheet:

• UL certificate EX29807
• UL Product iQ listing
• The WATEX foam bladder tank catalogue can be downloaded from this page.

Capacity and ratio controller size are selected from the foam solution flow and the foam concentrate in the system design. Send AZEIDK your project data and we will select the tank and send a quotation; any capacity or specification not in stock, AZEIDK can source on request.

The WATEX foam tank guide (capacities, ratio controllers, sizing): read the guide