The BERMAD model 43T-PS is an elastomeric, line pressure operated pump suction head control valve, specifically designed for advanced fire protection systems and the latest industry standards. The 43T-PS is used to control and sustain pump suction pressure at the pump inlet at an adjustable preset minimum value. This ensures a continued pressure supply to systems sharing the same supply line as well as preventing cavitation damage. Due to exceptional reliability, fail safe opening, fast reaction and low head loss, the 43T-PS is highly suited for fire pump discharge pressure control applications. As an option the 43T-PS can be fitted with a valve position indicator that can include a limit switch.
- Safety and reliability
-Obstacle-free, uninterrupted flow path
-Time-proven, simple, fail-safe actuation
-Single piece, rugged, elastomeric diaphragm seal – VRSD technology
-No mechanical moving parts
- High performance
-Very low head loss – allows maximum pump capacity
-High flow capacity
-Rated for PN 25bar/365 psi
-Straight-through-flow Y-type body
-Accurate pressure control within 5% of setting
- Specifically-designed for fire protection
-Face-to-face length standardized to ISO 5752, EN 558-1
-Meets the requirements of the industry standards
- Quick and easy maintenance
-Fast and easy cover removal
- Maintaining minimum suction head to a booster pump
- Over draw prevention in shared supply lines
- Prevention of pump cavitation damage
A typical installation of the BERMAD model 43T-PS is where the valve is installed downstream of the pump with a pressure sensing line leading from the valve to the pump intake or suction pipe.
The 43T-PS is especially suited for this function, as it has an exceptionally high flow capacity.
Therefore when pump suction pressure is available and above the pre-set minimum the 43T-PS will be fully open, presenting minimal
pressure loss for delivering the maximum possible volume of water to the fire event.