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Fire Protection

Bermad Model FP400E 5DC - Hydr. Pressure Control On-Off Deluge Valve

The BERMAD Model FP 400E-5DC is suitable for flow control in firewater systems that include wet pilot lines with closed fusible plugs. Providing boosted local opening, it is recommended for systems with elevated fusible plug lines. It opens, preserving system designed flow, and closes in response to hydraulic pressure status in the wet pilot line

FP400E-5DC - XXX

Features and Benefits

  • Pressure control function – Constant preset downstream pressure
  • Remote reset – Shut-off on remote command
  • One-piece molded elastomeric moving part – No maintenance required
  • Simple design – Cost effective
  • Obstacle-free full bore – Uncompromising reliability
  • Factory pre-assembled trim – Out-of-box quality
  • In-line serviceable – Minimal down time

Typical Applications

  • Fluctuating or over pressure
  • Petrochemical facilities
  • Tunnels
  • Power plants & transformers
  • Flammable materials storage
  • Gas storage tanks
  • Hydraulic remote controlled systems

Optional Features

  • Water motor alarm
  • Alarm pressure-switch (code: P or P7)
  • Seawater service (add FS as prefix to model)
  • Valve Position Single/Double Limit Switches


The BERMAD Model FP 400E-5DC is suitable for systems that include wet pilot lines with closed fusible plugs (thermal releases), and piping systems with a wide variety of open nozzles. Providing boosted local pressure release from its control chamber, Model FP 400E-5DC is recommended for systems with remote and/or elevated fusible plug lines. Combining a pressure control feature, it is also suitable for systems with high pressure supply source and/or relatively low flow.

In the SET position the line-pressure, supplied to both the main valve control chamber [1] and to a Hydraulic Relay Valve (HRV) [2] via the priming line [3], and through a Check Valve [4], an Accelerator [5] with priming restriction, and the wet-pilot line [6] Restriction [7], is trapped by the Check Valve, by the closed HRV, and by a closed Manual Emergency Release [8]. The trapped pressure holds the main valve’s diaphragm and plug against the valve seat [9], sealing it drip-tight and keeping the system piping dry. The HRV is held closed by the line pressure in the wet pilot line. Under FIRE condition, a pilot line hydraulic pressure drop opens the HRV. Pressure is then released from the main valve’s control chamber to the downstream, through the open HRV and the Pressure Reducing (PR) Pilot valve [10]. This allows the main valve to open, and water to flow into the system piping and to the alarm device. Should system pressure rise above PR pilot setting, the PR pilot throttles, thereby enabling pressure to accumulate in the valve control chamber. This causes the FP 400E-5DC to throttle closed, decreasing system pressure to PR pilot setting. The Manual Emergency Release [8], overrides the PR pilot, causing the valve to open fully.

Engineer Specifications

  • The On-Off deluge valve shall be a UL-Listed, hydraulically remote controlled elastomeric type globe valve with a rolling-diaphragm.
  • The valve shall have an unobstructed flow path, with no stem guide or supporting ribs.
  • Valve actuation shall be accomplished by a fully peripherally supported, one-piece balanced rolling-diaphragm, vulcanized with a rugged radial seal disk. The diaphragm assembly shall be the only moving part.
  • The valve shall have removable cover for quick in-line service enabling all necessary inspection and servicing.
  • The control trim materials shall consist of St.St. 316 tubing and fittings, and plated brass accessories, including Accelerator, HRV hydraulic actuated pilot valve, 2-Way Pressure Reducing Pilot, Y strainer and Manual Emergency Release.
  • The control trim shall be supplied as an assembly, pre-assembled and hydraulically tested at an ISO 9000 and 9001 certified factory.
  • The Pressure Control and Hydraulically Remote Controlled, On-Off Deluge Valve shall open and close in response to pilot line pressure drop, reducing higher upstream pressure to preset lo wer downstream pressure.

System Components

1 - Main Valve, BERMAD FP 400E Series

2B - Accelerator with Priming Restriction

2R - Pressure Reducing Pilot

4B - Priming Strainer

7B - Check Valve

15B - Manual Emergency Release

18B - Priming Ball Valve

26B - Hydraulic Relay Valve (HRV)


S - Valve Position Limit Switch / Switches

UL Listed

The BERMAD Model FP 400E-5DC is UL-Listed.

The installation shall include Indicating and Drain Components

Technical Data

Connection Standard

  • Flanged: ANSI B16.42 (Ductile Iron), B16.5 (Steel & Stainless Steel), B16.24 (Bronze) or ISO PN16
  • Grooved: ANSI/AWWA C606 for 2, 3, 4, 6 & 8”

Water Temperature

  • 0.5 – 50°C (33 – 122°F)

Available Sizes

  • 1½, 2, 2½, 3, 4, 6, 8, 10 & 12"
  • UL-Listed for sizes 1½, 2, 2½, 3, 4, 6, 8 & 10”

Pressure Rating*

  • Max. working pressure: 250 psi (17 bar)
  • Set: 30-165 psi (4.5-11.5 bar)

Manufacturers Standard Materials

Main valve body and cover

  • Ductile Iron ASTM A-536

Main valve internals

  • Stainless Steel 304 & Cast Iron

Control Trim System

  • Brass control components/accessories
  • Stainless Steel 316 tubing & fittings


  • Nylon fabric reinforced polyisoprene NR


  • Electrostatic Powder Coating Poleyester, Red (RAL 3002)

Optional Materials

Main valve body

  • Carbon Steel ASTM A-216 WCB
  • Stainless Steel 316
  • Ni-Al-Bronze ASTM B-148

Control Trim

  • Stainless Steel 316
  • Monel® and Ni-Al-Bronze
  • Hastalloy C-276


  • NBR
  • EPDM


  • High Build Epoxy Fusion-Bonded with UV Protection, Anti-Corrosion

Valve Outlet Pressure Fall-off Characteristics

On Inlet Under Set Pressure

PDF Datasheets

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Engineering Data*

2D CAD Drawing

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Engineering Data*
* Note: For some products Manual or Engineering Data are available only upon request.

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Product code

Bermad Model FP400E 5DC - Hydr. Pressure Control On-Off Deluge Valve

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