The Cameron ENTECH DRV-BN nozzle check valve was designed to provide three mandatory requirements of a check valve: non-slam, low pressure drop, and reduced maintenance in large-diameter applications.

The key feature of the ENTECH DRV-BN check valve is its inherent non-slam characteristics. This can be attained due to the valve reacting quickly to flow (velocity) changes that it outpaces the process changes and can reach the point of closure before it is possible for the flow to reverse.

The ENTECH DRV-BN check valve is used in a variety of applications such as water, oil, and LNG pump stations, as well as in gas compressor stations. This check valve is a large-bore valve designed for compressor and pumping stations from 16" (400 mm) diameter and larger.


The Cameron ENTECH DRV-BN check valve incorporates the following:

  • The use of an annular ring design reduces the weight of the disc, avoiding the likelihood of fatigue and significantly improving valve response time to pipeline flow changes.
  • Centralized single-coil spring mechanism is the most consistent spring-force design, which is stable and responds rapidly to flow variation.
  • A flowspacer allows the valve to be fully customizable to specific service and installation conditions and easily re-configurable in case of potential changes in customer plant flow performances over the years.