KERAFLO AYLESBURY KB Series Quick Start Manual

SIZES (DN): ¾"(20), 1"(25), 1¼"(32), 1½"(40)
AYLESBURY Valves are unlike any other float operated valve, ballcock or ball valve. Please read
these instructions and refer to attached drawings before installation.
Installation of valves should be in accordance with The Water Supply (Water Fittings) Regulations
1999 and BS6700:1997 Para. 2.2.4
Keraflo Valves contain a pair of maintenance free ceramic discs. Do NOT attempt to dismantle the Valve -
even if you are curious! Should the Valve ever become blocked with debris, ask Keraflo for a Service Bulletin.
EVIDENCE OF DISASSEMBLY OR SIGNS OF MISUSE MAY INVALIDATE WARRANTY.
OPERATING SPACE:
CHAIN LENGTH:
OVERFLOW/WARNING
PIPES
TURBULENT WATER:
FLANGED TANKS:
ROUND TANKS:
Valve
Min tank diameter (m)
SLOPING TANK WALL:
PIPEWORK SUPPORT:
SERVICING VALVES:
PLEASE PLACE LABEL ON TANK LID
ABOVE VALVE FOR FUTURE REFERENCE.
Keraflo Limited, Unit 1 Woodley Park Estate, 59-69 Reading Road, Woodley, Reading, Berkshire, RG5 3AN, UK
Tel: 0118 921 9920
P/KBINSTALL/04-08
A
'KB' TYPE FLOAT VALVES
YLESBURY
™

PRE-INSTALLATION CHECKS

Check for sufficient clearance - see dimension sheet Ki010* and Ki014*
for working dimensions.
Do not cut or shorten the Stainless Steel Chain - its weight is critical.
Likewise do not add weight by lengthening.
Check the position of the Overflow and Warning Pipe (where fitted). See
drawing Ki010* for closing water level (TWL) range.
Exceptionally turbulent waters, eg: cooling towers, should be avoided
directly beneath the float. Calming measures such as baffle plates, still
ponds etc. should be implemented.
The design of the Aylesbury 'KB' Type valves, sizes ¾"(20), 1"(25), 1¼"(32)
and 1½"(40)SF allow sufficient clearance between the Float and a 70mm
internal flange/rib. Sizes 1½"(40)HF and 2"(50)SF, allow sufficient
clearance between the Float and a 45mm internal flange/rib. The Valve
Backnuts may be adjusted to enable fitting to tanks with larger flanges;
provided a minimum of 20mm exists between the Float and tank wall
throughout the arc of the float.
Minimum tank diameters required:
¾" 1"
0.50m 0.50m
The wall to which the Aylesbury Valve is to be attached must be vertical.
If the wall around the fixing hole is sloped, tapered washers must be used.
These are generally available from the tank supplier.
Aylesbury Valves create virtually no tank wall stress. Additional pipework
support is therefore unnecessary; provided the Code of Practice for the
support of pipework in general is met.
A servicing valve must be fitted as near as is reasonably practicable to the
float operated valve. A servicing valve incorporating a particle strainer is
highly recommended.
Fax: 0118 921 9921
SF
1¼" 1½"SF
0.60m 0.60m
web: www.keraflo.co.uk
Page 1 of 5
, ,1½"(40) , 2"(50)
HF
1½"HF
0.80m
e-mail: info@keraflo.co.uk
SF
2"SF
0.80m
KBInstall