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Pressure Differential Sustaining Control Valve (PDSCV) FP-43T-06

The BERMAD model 43T-06 is an elastomeric hydraulic line pressure operated differential sustaining valve, specifically designed for advanced fire protection systems and the latest industry standards. The 43T-06 is equipped with an adjustable differential pilot valve and is used to sustain the differential between two different points. When the differential between the two sensed pressures rises above the pre-set value the pilot valve opens the main valve regulating the pressure and keeping the differential at the pre-set maximum. The 43T-06 is ideal for balanced foam proportioning systems, also as a safeguard for dosing pump flow overload. As an option the 43T-06 can be fitted with a valve position indicator that can include a limit switch suitable for Fire & Gas monitoring systems.

Product Features & Benefits
  • Safety and reliability

-Time tested, simple, fail-safe actuation
-Single piece, rugged elastomeric diaphragm seal – VRSD technology
-Obstacle-free, uninterrupted flow path
-No mechanical moving parts

  • High performance

-Very high flow efficiency
-Straight through flow Y-type body
-Rated up to PN25 / 365 psi

  • Quick and easy maintenance

-In-line serviceable
-Fast and easy cover removal

Typical Product Applications

Typical Applications

  • Pump overload & cavitation protection
  • Foam balanced pressure proportioning systems
  • Pump flow safeguard
  • Foam concentrate recirculation


System Installation

A typical installation of the BERMAD model 43T-06 uses the automatic valve actuation via a pilot control to open the 43T-06 in response to an increase in differential pressure between two points.

The 43T-06 is ideally suited for regulation in balanced pressure proportioning systems or foam dosing applications.