Membrane check valve FP-42T-20

for waterfire protectionpressure-reducing

Product Overview
The BERMAD model FP-42T-20 is an elastomeric, hydraulically operated, self-actuated automatic pressure reducing valve with an integrated check valve feature. Designed for advanced fire protection systems in accordance with NFPA-13 and NFPA-20 guidelines, it reduces a high upstream pressure to a low and stable system pressure and the integrated check makes it suitable for floor-to-floor pressure control in high-rise buildings. As a fire pump surge control valve, the FP-42T-20 prevents pump surge pressure spikes during pump start-up and significantly reduces negative suction pressure, mitigating pump cavitation risk.

Features & Benefits

• Safety and reliability
  • Low headloss design for increased safety under reduced supply pressure
  • Time-proven simple design with fail-safe actuation
  • Single-piece elastomeric diaphragm seal (VRSD technology)
  • Obstacle-free, uninterrupted flow path
  • No mechanical moving parts
• High performance
  • Fast, smooth response to pressure fluctuations
  • Very high flow efficiency
  • Efficient straight-through flow path
  • PN25 / 365 psi working pressure
• Specifically designed for fire protection
  • Face-to-face length standardized to ISO 5752 EN 558-1
  • Accurate and stabilizing pressure control adapted to sprinkler and fire main requirements
• Quick and easy maintenance
  • In-line serviceable
  • Fast and easy cover removal

Typical Applications

• Sprinkler feed systems
• Fire pump discharge pressure control
• Surge prevention on pump start-up
• Branch pressure reducing and check valve, floor-to-floor pressure control in high-rise buildings

Technical characteristics / specifications

• Model: FP-42T-20
• Series: 400Y Series
• Function: Pressure reducing valve with integrated check feature (pressure reducing & check)
• Operation: Elastomeric, hydraulically operated, self-actuated
• Standards: Designed in accordance with NFPA-13 and NFPA-20
• Working pressure: PN25 / 365 psi
• Face-to-face: Standardized to ISO 5752 EN 558-1
• Diaphragm: Single-piece elastomeric diaphragm (VRSD technology)
• Flow path: Obstacle-free, straight-through for high efficiency
• Maintenance: In-line serviceable; fast cover removal
• Primary applications: Fire protection systems, fire pump surge control, high-rise floor-to-floor pressure control