BERMAD Fire Protection

400 Series

Level Control Valve

with Altitude Pilot
Model: FP 450-80
■ High level reservoirs & water towers
■ Energy cost critical systems
■ Systems with poor water quality
■ Inherent refreshing
■ Level sustaining at reservoir outlet

Description
The Model FP 450-80 Level Control Valve is a hydraulically controlled, diaphragm actuated, control valve that shuts at
pre-set high reservoir level and fully opens in response to an approximately one-meter (three-foot) level drop, as
sensed by the 3-Way altitude pilot mounted on the main valve.

Features and Benefits Major Additional Features

■ Line-pressure driven – Independent operation ■ 2-14 meter Setting Altitude Pilot – FP 450-80-M6
■ Bi-level altitude pilot ■ 5-22 meter Setting Altitude Pilot – FP 450-80-M5
❑ No float, simple installation ■ 15-35 meter Setting Altitude Pilot – FP 450-80-M4
❑ On/Off service ■ 25-70 meter Setting Altitude Pilot – FP 450-80-M8
❑ Suitable for low quality water ■ Modulating altitude control – FP 450-82
■ One-piece molded elastomeric moving part – ■ Pressure sustaining (for 450-80) – 453-80
No maintenance required ■ Pressure sustaining (for 450-82) – 453-82
■ Dynamically restrained actuation
For further options, See relevant BERMAD publications.
❑ Non-slam closing

■ Balanced rolling-diaphragm
❑ High flow capacity

❑ Very low opening & closing pressure requirement

■ External installation
❑ Easy access to valve

❑ Easy level setting

❑ Less wear and tear

■ In-line serviceable – Easy maintenance

■ Flexible design – Easy addition of features
BERMAD Fire Protection
Model: FP 450-80 400 Series

Operation
The Model FP 450-80 is a pilot controlled valve equipped with an adjustable, 3-way, altitude pilot. The pilot senses the
static head of the reservoir level via a tube [1] connected to a “still point” at the bottom of the reservoir.
Should static head rise to pilot setting, the pilot [2] applies pressure to the control chamber [3] via cock valve [4],
powering the main valve to shut.
Should static head fall below pilot setting by approximately 1m (3 ft), the pilot vents the control chamber, causing the
main valve to fully open.
The 3-way cock valve [4] enables manual closing of the main valve.
For 8” valves and larger, an accelerator [5] quickens valve response.

Size Range 1½”-6” Size Range 8”-12”

[2]
[2] [1]
[1]
[5]

[4] [4]

[3] [3]

Engineer Specifications
The Level Control Valve shall shut at pre-set high reservoir level and fully open in response to an approximately
one-meter (three-foot) level drop, as sensed by the 3-way altitude pilot mounted on the main valve.
Main Valve: The main valve shall be an elastomeric type globe (or angle) valve with a rolling-diaphragm. The valve shall
have an unobstructed flow path, with no stem guide or supporting ribs. The body and cover shall be ductile iron. All
external bolts and nuts shall be of Stainless Steel 316. All valve components shall be accessible and serviceable
without removing the valve from the pipeline.
Actuation: 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.
Control System: The control system shall consist of a 3-way, altitude pilot valve with a covered, centered spring
and 8” (200 mm) sensing diaphragm, (for 10” and larger valves, an accelerator shall be added), an isolating cock valve,
a 3-way cock valve, and a filter. All fittings shall be of stainless steel. The assembled valve shall be hydraulically tested.
Quality Assurance: The valve manufacturer shall be certified according to the
ISO 9000 and 9001 Quality Assurance Standard.
BERMAD Fire Protection
Model: FP 450-80 400 Series

Typical Applications
Bi-Level Water Towers
The Model FP 450-80 senses the static head of the water level in the tank by means of a high sensitivity pilot. To do so
accurately, the sensing tube end must be connected to a “still point” at the bottom of the tank. The drainage pipe
provides this “still point”, a location not influenced by flow velocity as in filling and outflow pipes.

Drainage
Drainage

Sen Altitude Control Valve

sing Model FP 450-80
O utflow Tub
S e
Drainage up
N.C.Valve pl
y

“Always Full” - Shallow Reservoirs

In these reservoirs, the water level should be kept as
constant as possible.
The Level Control Valve with modulating altitude pilot
Model FP 450-82 is well suited to fulfill this requirement.
The altitude pilot is highly sensitive to changes and
accurately maintains level within a few centimeters.
To do so, the sensing tube end must be connected to a
“still point” at the bottom of the reservoir.

Level Control Valve with Modulating

Altitude Pilot Model FP 450-82

Level Control Valve with Modulating Altitude Pilot

Model FP 450-82 [3]

The Model FP 450-82 modifies the Model FP 450-80 [4]

“On-Off” feature into a modulating feature to maintain an “always full” reservoir.
[1]
The needle valve [1] continuously allows flow from valve inlet into the control
chamber [2]. The pilot [3] senses static head via sensing tube [4].
[2]
Should the static head rise towards pilot setting, the pilot throttles, causing the
main valve to throttle closed, reducing filling rate, eventually closing drip tight. [5]
The downstream cock valve [5] enables manual control closing.
BERMAD Fire Protection
Model: FP 450-80 400 Series

Technical Data

Th

Tw
L1, L2

1½ , 2” 2½” 3” 4” 6” 8” 10” 12”

Size
mm inch mm inch mm inch mm inch mm inch mm inch mm inch mm inch
L1 (1)
Dimensions

205 8 1/2 205 8 1/2 257 10 1/8 320 12 9/16 415 16 5/16 500 19 11/16 605 23 13/16 725 28 1/2
L2 (2) 180 7 1/16 210 8 1/4 255 10 1/16 N/A N/A N/A N/A 500 19 11/16 N/A N/A N/A N/A
3 3 3 5 7
Tw 284 11 /16 284 11 /16 300 11 /16 313 12 /16 341 13 /16 415 16 5/16 443 17 7/16 481 18 15/16
Th 210 8 1/4 210 8 1/4 215 8 7/16 243 9 9/16 315 12 3/8 350 13 3/4 382 15 430 6 15/16
Notes:
1.L1 is for flanged valves. 4. Data is for envelope dimensions, component positioning may vary.
2. L2 is for threaded NPT or ISO-7-Rp. 5. Provide space around valve for maintenance.
3. Tw & Th are max. for pilot system.

Connection Standard Available Sizes

• Flanged: ANSI B16.42 (Ductile Iron), • Globe: 1½, 2, 2½, 3, 4, 6, 8, 10 & 12”
B16.5 (Steel & Stainless Steel), • Angle: 2, 3 & 4”
B16.24 (Bronze) Pressure Rating
ISO PN16 • Max. inlet: 250 psi (17 bar)
• Grooved: ANSI/AWWA C606 for 2, 3, 4, 6 & 8”
• Threaded: NPT or ISO-7-Rp for 2, 2½ & 3”
Water Temperature
• 0.5 – 50°C (33 – 122°F)

Manufacturers Standard Materials Optional Materials Altitude Pilot Data

Main valve body and cover Main valve body Standard Materials:
• Ductile Iron ASTM A-536 • Carbon Steel ASTM A-216 WCB • Body & cover: Brass, Bronze or
Main valve internals • Stainless Steel 316 Stainless Steel
• Stainless Steel & Elastomer • Ni-Al-Bronze ASTM B-148 • Elastomers: NBR (Buna N)
Control Trim System Control Trim • Springs: Galvanized Steel or
• Brass control components/accessories • Stainless Steel 316 Stainless Steel
• Stainless Steel 316 tubing & fittings • Monel® and Al-Bronze • Internals: Stainless Steel
Elastomers • Hastelloy C-276 • Diaphragm covers: Fusion bonded
• Polyamide fabric reinforced Polyisoprene, NR Elastomers epoxy coated Steel or Stainless Steel
Coating • NBR General Information
• Electrostatic Powder Coating Polyester, • EPDM • Altitude Adjustment Range Table:
Red (RAL 3002) Coating Code meter feet
• High Build Epoxy Fusion-Bonded M6 2-14 7-46
with UV Protection, Anti-Corrosion M5 5-22 17-72
M4 15-35 49-115
M8 25-70 82-230

• Shut-off level repeatability: 10 cm (4”)

• Re-opening level: approx. 1m (3 ft)
below shut-off level

bermadfir e@bermad.com • www .bermad.com

The information herein is subject to change without notice. BERMAD shall not be held
liable for any errors. All rights reserved. © Copyright by BERMAD. PE4PE-80 11