Gate valves renowned for superior quality
AVK has been in the valve business for 50 years and the first valve developed and manufactured was a resilient seated gate valve with socked end from 1970 by Niels Aage Kjaer. He soon realized that the quality of the internal rubber components are of paramount importance for the valve performance, so back in 1975 he decided to take full control of this and acquired a neighbouring rubber factory. Today, AVK GUMMI A/S develops and manufactures rubber compounds to AVK's and other customers' uncompromising standards of excellence.
Today, AVK offers gate valves according to global standards and with a wealth of end connections and material configurations – in total more than 300 variants in total from the AVK Group of companies to meet local requirements around the world
Considerations when choosing gate valves
Please refer to the pages Gate valve introduction, unique wedge design, sturdy gate valve design, end connections and accessories to find much more details. In our solutions and information section you will find general technical information about our products, highly relevant for choosing the right solution; our guide how to choose the right gate valve, the article about the main European standard for gate valves and how AVK complies, an article about why third party approvals can help you make the safe choice, and details about our coating process.
Design features of AVK gate valves
- Fixed, integral wedge nut prevents corrosion, made of brass certified for use in contact with drinking water
- Wedge shoes fully vulcanised to the wedge core ensuring smooth operation and maximum corrosion protection
- AVK’s wedge rubber features an excellent bonding and ability to regain its shape, minimum formation of biofilm and high resistance to water treatment chemicals
- Large stem hole in the wedge prevents stagnant water
- Rolled threads increase the stem’s durability
- Triple safety stem sealing
- Thrust collar provides fixation of the stem and low torques
- The bonnet gasket is fixed in a recess in the bonnet and encircles the bonnet bolts to prevent blow-out
- Countersunk bonnet bolts sealed with hot melt to protect against corrosion
- Full bore ensures low head loss and enables use of pipe cleaning devices
- Low operating torques ensure easy operation
- Epoxy coating in compliance with DIN 30677-2/ DIN 3476 part 1, EN 14901 and GSK approved
