This product is related to this category:

Fire Protection

Bermad Model FP400E 5D - Hydraulically Control On-Off Deluge Valve

The BERMAD Model FP 400E–5D is suitable for systems that include wet pilot lines with closed fusible plugs. Providing boosted local opening, it is recommended for systems with elevated fusible plugs. The valve is closed as long as the wet pilot line is pressurized. It opens in response to a hydraulic pressure drop in the wet pilot line.

FP400E-5D - XXX

Features and Benefits

  • Local release HRV ־ Quick opening for long hydraulic remote control piping lines
  • 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

  • Petrochemical facilities
  • Tunnels
  • Power plants & transformers
  • Flammable material storage
  • Gas storage tanks
  • Hydraulic remote controlled systems

Optional Features

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


The BERMAD Model FP 400E־5D 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. The typical wet pilot line, is installed in the covered area and connected to the valve trim. Providing boosted local pressure release from its control chamber, the Model FP 400E־5D is recommended for systems with remote and/or elevated pilot line fusible plugs.

In the SET position line-pressure, which is supplied to both the main valve’s control chamber [1] and a Hydraulic Relay Valve (HRV-2) [2] by the priming line [3], 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-2, by the closed wet pilot line 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-2 is held closed by the pressure in the wet pilot line.

Under FIRE or TEST conditions, a pilot line hydraulic pressure drop opens the HRV-2 causing water to exit through the Accelerator faster than it can be supplied. Pressure is then released from the main valve’s control chamber through the opened HRV-2, or the Manual Emergency Release, allowing the main valve to fully open and water to flow into the system piping and to the alarm device (if mounted).

Engineer Specifications

  • The On-Off deluge valve shall be a UL-Listed, hydraulically 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 be S.S.316 tubing and fittings and plated brass accessories, including Y strainer, Accelerator, Hydraulic Relay Valve (HRV-2), 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 Hydraulically Controlled, On-Off Deluge Valve shall fully open in response to a wet pilot line hydraulic pressure drop.

System Components

1 - Main Valve, BERMAD FP 400E Series

2B - Accelerator with Priming Restriction

3B - Orifice Assembly

4B - Priming Strainer

7B - Check Valve

15B - Manual Emergency Release

18B - Priming Ball Valve

26B - Hydraulic Relay Valve (HRV-2)


S - Valve Position Limit Switch / Switches

UL Listed

The BERMAD Model FP 400E-5D 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)

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

PDF Datasheets

PDF - Download Icon
Engineering Data*

2D CAD Drawing

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

Cannot download file or do you need more information? Please contact us below.

Thank you! Your submission has been received!
We will contact you as soon as possible.
Oops! Something went wrong while submitting the form.

For more information or different sizing please contact us.

Product code

Bermad Model FP400E 5D - Hydraulically Control On-Off Deluge Valve

Contact Us

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.