A double check valve is a type of check valve designed to prevent backflow in a plumbing system. It consists of two check valves connected in series, each of which operates independently to prevent water from flowing backwards in the system. It is usually installed in areas where the risk of contamination is high, such as near a sewage treatment plant or other source of contaminated water.

Briscoe Protective is the largest privately held security company in the NYC-Metro area. The company brings together six of the area's leading names in security and fire protection. We are proud to serve families, businesses and buildings from westchester through new york city and across long island .

Thomas B. Hager Hager Engineering was founded in 1992 by its principal, thomas b. hager p.e. he has extensive experience in the analysis, design, administration and construction of all types of bridges. His son, brad, has many years of experience in Drafting and computer drafting/design .

World leading technologies create real-time data on pipeline infrastructure. Enables operators to identify leaks and pipe deterioration. Also allows operators to measure water flow and identify tampering. Launch of new smartcap technology allows any hydrant to be retrofitted with smart multi-sensor technology that can measure pipeline flow and extractions. Launched standpipe hiring service enabling water utilities to outsource hiring standpipe equipment to customers. Standpipes are WRAS-approved and a Calm network training course

BS1710:2014 covers pipes, fittings, meter box’s, valves, Consumables, Workwear, PPE, Tools, Equipment, Marker Tape. Cctv is a great way to keep up to date with what’s happening in the industry. It gives you the information you need to keep your project on track .

We are active members of the Chamber of Commercethe Vancouver Island Construction Associationand the Irrigation Industry Association of British Columbia. The IIABC offers extensive trainingcertificationand most importantlya code of conduct that ensures adherence to stringent standards and business practices. We service clients from the Greater Victoria area to Campbell River .

Our aim is to supply parts that are the equivalent or better than the manufacturers themselves. Cs commercial products has a simple catalogue that’s easy to use and easy to help identify the correct products. We only provide quality traceable parts chosen from a hand selected pool of Suppliers .

John Henry's Plumbing, Heating and Air Conditioning started as a small, family business in 1996 evolved into a multi-faceted home service company. The customer has been top-priority since the beginning, and that’s why we offer a 100% customer satisfaction guarantee .

Marsh Metrology has been providing professional calibration services to quality regulated clients for over 20 years. The newly created RF/Microwave Lab, allows us to deliver superior, diversified capabilities to our clients. By adhering to more recent and stringent standards, we are able to provide more accurate results .

Hitachi building systems proposes total solutions that consider infection prevention and comfortable movement within the building. Introducing BUILLINK, a support tool for building owners and managers who can remotely manage buildings such as elevators. We have prepared a simulator that can be easily operated by anyone who values the customer's point of view .

Dutco tennant LLC has been a leader in supplying various kinds of industrial and engineering solutions for diverse industry verticals. We have worked with thousands of clients who have trusted in us because of our pledge to excellence through environmental friendly and socially-responsible solutions. Our company profile is that we are growing fast and we have created some of the world’s best high performing teams .

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