Honeywell R295P-F Product specification sheet
Mechanical disconnector with flanges direct actuated
GB type according to EN
Construction
The mechanical disconnectors comprises:
• Housing with pressure gauge
• Outlet check valve
• Spring bonnet
• PN 16 flanged connections to ISO 7005-2, DIN EN 1092-2
• Drain connector
• Valve insert with spring
• Spindle guide with double O-ring seal
Materials
• Grey cast iron housing, powder coated inside and outside
• Steel spring bonnet
• NBR seals
• Stainless steel valve stem and spring
• Red bronze for other internal parts
• Red bronze drain connector up to DN 100, Grey cast iron
drain connector DN 125 - DN 200, powder coated inside and
outside
• Chrome plated balanced-seat piston
• High grade synthetic material bearing surfaces for sliding in-
EN0H-1211GE23 R0206 y Subject to change without notice
ternal parts
1717/ type 1 according to DIN1988 part 4
R295P-F
Product specification sheet
Application
Mechanical disconnectors of this type are suitable for the protection of drinking water systems as required by EN 1717 "The technical regulation of drinking water systems" and correspond to
DIN1988 part 4 type 1 construction.
Their purpose is to protect systems against back pressure, back
flow and back syphonage of non-potable water into the public
water supply network.
Mechanical disconnectors can be used to provide protection up
to and including liquid category 3 (slightly toxic substances) and
therefore offer better protection than check valves.
Special Features
• DIN/DVGW and SVGW approvals in all connection sizes
• Optimal protection of the drinking water supply system
• Enhanced protection against back pressure, back flow and
back syphonage into the water supply network
• Shutoff position visually indicated on the spring bonnet
• Compact construction
• Powder coated inside and outside - Powder used is physiologically and toxicologically safe
• Meets KTW recommendations for potable water
• Low pressure loss and high flow rate
Range of Application
Medium Cold water
Max. inlet pressure 16.0 bar
Technical Data
Installation position Horizontal with spring bonnet upwards
Max. operating
temperature
Opening pressure 0.5, 1.0, 1.5 or 2.0 bar as required
Minimum inlet pressure
Connection size DN 65 - 200
40°C
(DN 65 - DN 100)
0.5, 1.0 bar as required
(DN 125 - DN 200)
= opening pressure + 1,0 bar
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R295P-F Mechanical disconnector with flanges direct actuated
Method of Operation
Type 1 mechanical disconnectors remain in the flow position and
change to the shutoff position only when the inlet pressure falls
below the design opening pressure.
The inlet pressure operates on the annular surface of the valve piston and pushes it against the force of the spring bringing the piston to the open position. If the supply pressure falls below the
opening pressure needed to overcome the spring force (for example because of a broken pipe or during service work by the
supply undertaking) then the integral spring pushes the valve into
the closed position.
Options
R295P-... FA = With flanges, 0.5 bar opening pressure
R295P-... FB = With flanges, 1.0 bar opening pressure (stan-
dard pattern)
R295P-... FC = With flanges, 1.5 bar opening pressure
(DN 65 - DN 100 only)
Special Versions available on request
Connection size
Connection size DN 65 80 100 125 150 200
Weight approx. kg 48 67 89 145 206 408
Dimensions mm
L 532 572 652 752 882 1102
H 380 495 475 528 563 851
h 165 208 232 280 313 438
Nominal flow rate m
3
/h
at ∆p = 0.3 bar 27 34 68 114 150 198
kvs-value (full flow) 50 62 125 208 274 362
ξ value 111710 9 1019
Opening pressure 0.5, 1.0 or 1.5 bar as required 0.5 or 1.0 bar as required
DIN/DVGW Approval No. NW - 6301 AT 2322
SVGW Approval No. 8309-1381
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EN0H-1211GE23 R0206 y Subject to change without notice
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