Unique System (UK) Ltd products

WATER WEIGHTS water filled proof load bags are a unique, safe and highly certified product specifically designed to provide a test load instead of traditional solid test weights.The use of WATER WEIGHTS water filled proof load bags for load testing cranes, davits, derricks, winches or any item of lifting equipment is recognized worldwide as the most safe, efficient and cost effective system of load application.

Water Weights` lifeboat testing system is an extremely safe and simple method of proof load testing. The bags are light and easily positioned and fulfill the requirement for an evenly distributed test load.  A control manifold and pumping system is used to remotely fill and drain the water bags, negating the need for personnel to be in the craft while undergoing proof load test. Loading is measured and verified by means of a calibrated flowmeter.

WATER WEIGHTS water filled proof load bags are an extremely safe and simple method of load testing davits. WATER WEIGHTS water filled proof load bags weigh less than 1.5% of achievable load, so are light and easy to handle making them the ideal test load and method for davit testing. Gradual filling allows any problem to be identified quickly prior to attaining maximum load. Static and dynamic testing of davit systems is safely and efficiently achieved using WATER WEIGHTS water filled proof load bags.

The use of WATER WEIGHTS water filled proof load bags for proof load testing produce significant savings when certifying construction hoists. Specifications and installations are generally governed by OSHA 1926.552 and ANSI 10.4 standards. The requirements include a `drop test` as part of the final inspection and certification.

Water Weights` lifting bags represent the most versatile and useful equipment of all underwater lifting bags. We even offer tailor made manufacturing on all models to meet clients` special requirements.

Water Weights Inc. have assisted in special circumstances during the launch of vessels at shipyards. Specially designed bags, and manifold systems are engineered and positioned in predetermined locations on the hull in order to increase buoyancy of vessels during launch. This special equipment and service addresses challenges in tides and drydock clearances.

Water Weights are ideally suited for testing boat hoists and rubber tired gantries. The development of Water Weights bags has increased greatly the practicality, economy and safety of providing proof load testing in many applications. In addition, certain proof load testing situations only become feasible with the use of Water Weights. With bags weighing only some 2% of achievable load, floor loading restrictions are rarely a problem. Bags are ideally suited to inaccessible lifting points.