Altitude control valve of this type controls the water level in, for
example, water reservoirs without the need for using a float valve
or other ancillary controls.
The highly sensitive pilot valve and the main valve are installed
outside the water reservoir and the pilot valve senses the hydrostatic water pressure from the water level in the reservoir.
The main valve closes when the maximum set pressure for the
pilot valve is reached and reopens when the water level corresponds to the lower set value on the pilot valve.
The standard version permits filling of a water storage unit. A
special version is also available on request which can be used for
both filling and emptying water storage units.
Range of Application
MediumWater
Operating pressure Max. 16 bar
Setting range0.5 - 5 m water head (Standard version)
Construction
The filling valve comprises:
• Housing with PN16 flanges per ISO7005-2, EN1092-2
• Two-way pilot valve
• Control circuit with ball valves on inlet and outlet
• Control circuit with integral rinsable filter insert
Materials
• Ductile iron housing, cover plate and diaphragm plate
(ISO 1083), powder coated
• Red bronze/stainless steel regulating cone
• Stainless steel pressure spring and control rod
• Fibre-reinforced NBR diaphragm
• NBR and EPDM seals
• Stainless steel valve seat
• High quality synthetic material control circuits
• Brass compression fittings
• Brass pilot valve housing
EN0H-1329GE23 R0807 • Subject to change
• Stainless steel filter insert
Technical Data
Operating temperature
Nominal pressurePN 16
Minimum pressure0.7 bar
Connection sizeDN 50 - 450
Max. 80 °C
PN 25 on request
www.honeywell.com55
FD300 Altitude control valve
Method of Operation
At zero pressure the valve is closed. When the system is then put
into operation, the water flows in and opens the diaphragm valve.
This fills the reservoir until the water head corresponding to the
set hydrostatic pressure on the pilot valve is reached and it then
closes. If the pilot valve is closed, the pressure in the chamber
above the membrane rises. The membrane surface area is larger
than the valve surface area and therefore the diaphragm valve
closes. If water is drawn from the water store, the hydrostatic
pressure falls until it reaches the lower set pressure and the pilot
valve then opens. In this way the pilot valve controls the opening
and closing of the main valve.
- V=5.5 m/s
kvs-valuem3/h434310316740767611601600160033003300
Accessories
FY69PStrainer
5
r
15
ba
0
16
With double mesh, grey cast iron housing, powder
coated inside and outside.
A = Mesh size approximately 0.5 mm
F76S-F Reverse-rinsing filter
FY69P
Red bronze housing and filter bowl. Available in sizes
DN 65 to DN 100, with filter mesh sizes 100 µm
or 200 µm
RV283P
56www.honeywell.com
F76S-F
RV283P Check valve
Grey cast iron housing, powder coated inside and
outside. DIN/DVGW tested in compulsory test sizes
DN 65, DN 80 and DN 100
EN0H-1329GE23 R0807 • Subject to change
Installation Example
FD300 Altitude control valve
Installation Guidelines
• Install shutoff valves on both sides of the pressure sustaining
valves
• Install strainer upstream of filling valve
o Protects against damage from coarse dirt
• Note flow direction (indicated by arrow)
• Ensure good access
o Simplifies maintenance and inspection
• The main valve must be installed below the maximum water
level of the water storage facility being filled
• The pilot valve must be at least 2 m below the lowest stored
water level and not more than 50 m below the highest water
level
• Install connectors for removal and refitting for maintenance
Flow Diagram
Typical Applications
Filling valves of this type, within the limits of their specification, are
for water supply installations and also for commercial and industrial applications.
The following are some typical applications:
• Potable water supply
• As filling valves for reservoirs
• For receiver vessels for industrial installations
Manufactured for and on behalf of the
Environmental and Combustion Controls Division
of Honeywell Technologies Sàrl, Ecublens, Route
du Bois 37, Switzerland by its Authorised Representative Honeywell GmbH