The block valves are used as blocks on production lines of the chemical and oil and gas processing industry.

Block valves are designed for operation in open areas in the conditions of the macroclimatic area of HL1 according to GOST 15150.

The structure of the blocks consists of pipelines which are fixed to the supports of the frame. Each pipeline includes a valve: a gate valve with manual drive and a non-return valve. The valve has a flange connection for carrying out repairs and inspections.

For connection to the associated equipment at the site of operation, each pipeline has a quick-release connection at the entrance, and a welding section at the exit.

The pipelines are rigidly fixed to the frame support posts by means of clamps. The frame has anti-slip flooring.

In order to meet electrical safety requirements, the frame is provided with a place for grounding.

For carrying out loading and unloading operations on the frame there are sling-powered devices.

The working medium enters the block pipeline inlet and passes through it further along the process line if the valve is open. Flow control is provided by manually opening/closing the valve. In order to avoid emergency situations, during which it is possible to change the direction of the flow of the working medium (which can lead to equipment failure), there are check valves behind the valve in the pipelines of the blocks.