BERMAD 730-UF Owner's manual

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The information contained in this document is subject to change without notice. BERMAD shall not be liable for any errors contained herein.
All Rights Reserved. © Copyright by BERMAD Control Valves.
IOM
Model: FP
-730-
UF Sizes: 2"-
12
"
PI7PE09-730-UF
Bermad Pressure Relief Valve
Model: 730-UF
NSTALLATIONI
PERATIONO
AINTENANCEM
Application Engineering
BERMAD

[email protected] www.bermad.com
The information contained in this document is subject to change without notice. BERMAD shall not be liable for any errors contained herein.
All Rights Reserved. © Copyright by BERMAD Control Valves.
IOM
Model: FP
-730-
UF Sizes: 2"-
12
"
PI7PE09-730-UF
1. Safety First
BERMAD believes that the safety of personnel working with and around our equipment is the most important
consideration. Please read all safety information below and from any other relevant source before attempting to
perform any maintenance function.
Comply with all approved and established precautions for working with your type of equipment and/or environment.
Authorized personnel should perform all maintenance tasks.
Prior to performing a procedure, read it through to the end and understand it. If anything is not clear, ask the
appropriate authority.
When performing a procedure, follow the steps in succession without omission”
2. Description
BERMAD’s Model FP 730-UF Pressure-Relief Valve is a pilot-operated, diaphragm type, high performance valve. It
accurately maintains a constant preset system pressure regardless of changing demands.
The Model FP 730-UF Pressure-Relief Valve reliably relives excess system pressure to sump or atmosphere, meeting all
NFPA, UL and FM requirements for fire pump service.
The double-chambered actuator design enables quick and smooth valve action. According to the inlet pressure, the pilot
valve regulates the main valve throttling. This valve requires only existing line pressure to operate.
2.1 Models and Sizes
Models and Sizes covered by this document include the BERMAD Pressure-Relief Valve FP 730-UF, sizes 2”, 2.5”, 3”,
4”, 6” and 8”. It is available in either the Globe or Angle pattern.
Sizing shall be not less than according to NFPA 20 Table 2-20..
2.2 Operating Pressure Rating
Sizes 2”, 2.5”, 3”, 4” and 6” are UL-Listed & rated to maximum set pressure 350 psi (24 bar).
Size 8” is rated to maximum set pressure 175 psi (12 bar).
Sizes 2”, 2.5”, 3”, 4”, 6” and 8” are FM approved to maximum set pressure 200 psi (14 bar).
2.3 Optional Features
Valve Position-Flow Indicator
This option provides the means for detecting motion of water through the valve according to requirements of NFPA 20.
This item is field retro-fit able.
Large Control Filter
This option provides extra capacity means for filtering of the water supplied to the control loop to achieve the essential
level of debris free water. This feature is recommended for those cases where there is any doubt as to the level of
particulate matter in the water.
3. UL Listed
BERMAD 730 UF Deluge Valve is UL Listed when installed with specific components & accessories. Refer to the
current UL Directory. Consult the manufacturer for any component approval recently to appear in the UL fire
protection equipment directory.

[email protected] www.bermad.com
The information contained in this document is subject to change without notice. BERMAD shall not be liable for any errors contained herein.
All Rights Reserved. © Copyright by BERMAD Control Valves.
IOM
Model: FP
-730-
UF Sizes: 2"-
12
"
PI7PE09-730-UF
4. Installation
4.1 Before the valve is installed, flush the pipeline to remove any dirt, scale, debris, etc. Not flushing the line might
result in the valve being inoperable.
4.2 In cases where the valve is used for individual pump pressure-relief, locate the relief valve between the pump
and the pump discharge check valve. It shall be attached in a way that it can be readily removed for repairs
without disturbing the piping.
4.3 Allow enough room around the valve assembly for any adjustments and future maintenance/disassembly work.
4.4 Install the valve in the pipeline with the valve flow arrow on the body casting in the proper direction. Use the
lifting eye provided on the main valve cover for lifting and lowering the valve.
4.5 For best performance, install the valve horizontally with the cover up. However, other positions are acceptable.
Ensure that the valve is positioned so that the actuator can be easily removed for future maintenance.
4.6 After installation, carefully inspect/correct any damaged accessories, piping, tubing, or fittings. Ensure that there
are no leaks.

[email protected] www.bermad.com
The information contained in this document is subject to change without notice. BERMAD shall not be liable for any errors contained herein.
All Rights Reserved. © Copyright by BERMAD Control Valves.
IOM
Model: FP
-730-
UF Sizes: 2"-
12
"
PI7PE09-730-UF
Figure 1: Installation Drawing

[email protected] www.bermad.com
The information contained in this document is subject to change without notice. BERMAD shall not be liable for any errors contained herein.
All Rights Reserved. © Copyright by BERMAD Control Valves.
IOM
Model: FP
-730-
UF Sizes: 2"-
12
"
PI7PE09-730-UF
5. Operation
The Pressure-Relief Pilot Valve (3) senses inlet pressure and modulates the upper control chamber causing the main
valve to throttle, thus sustaining constant inlet pressure. When the inlet pressure raises above the pilot setting, the pilot
opens, pressure in the upper control-chamber decreases, and the main valve modulates open to relieve inlet pressure
and sustain pilot setting.
The pressure-relief pilot is equipped with an adjusting screw (5) to preset the desired inlet pressure and an internal
adjustable Needle Valve (2) to control the main valve closing speed.
.
Starting –up
5.1 Provide pump shut-off pressure to the Model FP 730R Pump Suction Control Valve (1) inlet, allow no
system demand.
5.2 Create sufficient pressure (higher than the valve set pressure) to allow flow through the relief valve.
5.3 While relief valve is operating, wait for the valve inlet pressure to stabilize.
The pressure on the inlet side of the relief valve should be according to the factory pre-set adjusted
pressure.
5.4 Slowly allow system flow so that system pressure falls below the relief-valve adjusted pressure.
The relief-valve should slowly shut to drip-tight.
Readjusting
Tools required:
xFlat head screwdriver
xAdjustable wrench (6-10 inch)
The pilot valve is factory pre-set. The pre-set is clearly indicated on the pilot valve data-plate.
If readjustment to either the pressure or valve response is required, follow the following steps.
5.5 Ensure that there is nominal flow through the relief-valve.
5.6 Release the tension between the adjusting screw on the pressure-relief pilot valve and the fastening
nut by turning the fastening nut counterclockwise.
5.7 By alternately turning the adjusting screw (5) on the pilot valve (3) a half turn and then reading the
outlet pressure, gradually adjust the pressure:
5.8 Counterclockwise to decrease (—) the inlet pressure
or
5.9 Clockwise to increase (+) the inlet pressure.
Note: Valve response adjustment affects pre-set pressure. Any adjustment to valve
response requires rechecking pre-set pressure. See section 5.1, steps 1-4.
5.10 Repeat the Starting-up procedure, section 0 steps 1-4.
5.11 By turning the needle valve screw (2) on the pilot valve bottom, adjust the valve response. Turn:
5.12 Clockwise (while facing the screw) to decrease (-) the closing speed of the main valve
or
5.13 Counterclockwise to increase (+) the closing speed of the main valve.
5.14 Repeat the Starting-up procedure, steps 1-4.

[email protected] www.bermad.com
The information contained in this document is subject to change without notice. BERMAD shall not be liable for any errors contained herein.
All Rights Reserved. © Copyright by BERMAD Control Valves.
IOM
Model: FP
-730-
UF Sizes: 2"-
12
"
PI7PE09-730-UF
6. Figure 2: Operation Drawing
7. Maintenance and Inspection Test
Warning: Do not turn off the water supply, to make repairs, without notifying local
security guards.
7.1 In any of the following inspections or testing procedures, if an abnormal
condition exists, see Troubleshooting for possible cause and corrective action.
7.2 The Model FP 730UF valve is to be inspected, tested and maintained in
accordance with the Maintenance Instructions of the plant, this Maintenance
Manual, as well as the Standard for the Inspection, Testing and Maintenance of
Water-Based Fire Protection Systems, NFPA 25.
8. Weekly Inspection
8.1 The system should be inspected under flow conditions.
8.2 Check that the main valve, pilot system, accessories, tubing & fittings, are all in good condition, damage free
and not leaking.
8.3 The fastening nut, of the pilot valve (2 figure 1) adjusting screw, should be fastened tightly.
8.4 For circulation type installations, verify that sufficient water flows through the valve when fire pump is operating
at shut-off pressure (churn) to prevent the pump from overheating.
8.5 Verify that the pressure upstream of the relief valve fittings in the fire pump discharge piping does not exceed
the pressure for which the system components are rated.

[email protected] www.bermad.com
The information contained in this document is subject to change without notice. BERMAD shall not be liable for any errors contained herein.
All Rights Reserved. © Copyright by BERMAD Control Valves.
IOM
Model: FP
-730-
UF Sizes: 2"-
12
"
PI7PE09-730-UF
9. Monthly Inspection and Test
9.1 Complete Weekly Inspection.
9.2 During the monthly fire pump flow test, it shall be verified that the pressure relief valve is correctly adjusted and
set to relieve at the appropriate pressure and closes below the pressure setting
10. Abnormal Conditions - Troubleshooting
SYMPTOM PROBABLE CAUSE REMEDY
Filter screen (4) blocked. Remove filter cap and
screen to clean. Filter might
be insufficient. See Note
below.
Pulsates or hunts. Slowly adjust needle
valve (21) until pulsation
stops.
Needle valve (21) not
properly adjusted.
Factory set at ½ or 1½
open. Adjust.
Valve fails to regulate
Air trapped in main valve
cover.
Loosen cover tube fitting
at the highest point, allow
the air to escape and re-
tighten.
Insufficient inlet pressure. Check/create inlet
pressure.
Valve fails to open
Pilot is adjusted to high. Turn adjusting screw
CCW on
pilot (5).
Filter screen (4) blocked. Remove filter cap and
screen to clean. Filter might
be insufficient. See Note
below.
Debris trapped in main
valve.
Remove and inspect
actuator assembly.
Check seat and disc seal.
Check for foreign bodies.
Rinse at high flow-rate.
Diaphragm in main valve
is leaking.
Valve fails to seal inlet
pressure
Diaphragm in pilot valve
is leaking.
Open the valve cover,
inspect diaphragm.
If damaged, replace.
Note: Mark “F” – Large Filter
In cases where the filter screen frequently becomes blocked, install a filter with filtration capacity of at least 80 mesh,
250 μm.
We recommend replacing the standard filter with BERMAD’s Large Filter Mark “F”.