FULTON VMP Series - Water Level Gauge Set Installation; Steam Safety Valve Installation and Maintenance

VMP-IOMM-2018-2
Fulton Ltd
Page 10
INSTALLATION - 2
2.4.2.3 WATER LEVEL GAUGE SET (SIGHT GLASS)
Boilers are normally supplied with two complete water level gauge sets (sight glasses). The water
level gauge blowdown cock should be connected to the auxiliary blowdown line from the water
bottle blowdown valve by 3/8 in. soft copper tubing.
2.4.3 STEAM SAFETY VALVE
WARNING

other items not capable of accepting boiler pressure.
!
WARNING
Improper installation or maintenance of the water level gauge assembly can cause immediate or

!
Safetyvalvesarefactoryttedandpre-set,theyMUSTNOTbeadjusted.Thedischargeoutlet
should be piped to a safe discharge point and the piping so arranged that any condensate
trapped in the pipework will drain away from the valve.
Note: It is recommended that the safety valve discharge pipework is installed to the requirements of
BSEN 13480-1:2012
a) The lift pressure is indicated on the safety valve 
b) Thesafetyvalvettedtotheboilerisdesignedtopreventtheboilerexceedingitsdesign
pressure.
c) Any system connected to the boiler not capable of accepting boiler pressure must be protected
by a separate safety valve set to the required pressure.
d) Ensure pipes and connections are clean and free of any foreign material.
e) Do not install using a pipe wrench. Use the appropriately sized wrench on the bonnet nut.
f) Install the valve vertically with no unnecessary intervening piping between the boiler and the
valve.
g) Do not cap or plug the weep hole on the side of the safety valve.
h) A discharge pipe shall be of a pipe size equal to, or greater than, the outlet of the safety valve.
i) Minimizedischargepipingttingsandoverallpipingruntoavoidoverpressurizationofthe
piping, limiting safety valve discharge volume.
j) Do not support discharge piping with the safety valve. Discharge piping must be supported
adequately by appropriate means.
k) Terminate the discharge pipe directly to atmosphere. Discharge pipe must not contain a shut
off valve of any sort.
l) Adrainpipeistobettedtothelowestpointofthedischargepipework.Pipesizetobeno
greater than 10 mm.