Glossary of Central Heating and Plumbing Terms
BSP |
British Standard Pipe Thread |
CF |
Cold feed from supply tank to
sytem |
COSH |
Control of Substances Hazardous
to Health |
Dumball |
A weighted Anti-Gravity Valve |
DV |
Three Way Diverter Valve |
DZR |
Dezincification Resistance |
Exp |
Expansion pipe from system to
expansion / supply tank |
Exp. Tank |
The Supply & Expansion Tank
to support your Heating System |
Flow |
The Flow Pipe from the boiler /
Heat Source |
ID |
Inside Diameter |
K1 |
Single Panel Radiator with Fins |
K2 |
Double Paneled Radiator with two
Fins |
LPG |
Liquified Petroleum Gas |
Method Statement |
A Detailed statement by the
Contactor detailing works and Method |
NPT |
American Pipe Thread |
NRV |
Non Return Valve |
OD |
Outside Diameter |
OF |
Over Flow |
P+ |
Double Radiator with one Set of
Fins |
P1 |
Single Panel Radiator |
P2 |
Double Panel Radiator |
Part L |
Refers to a basic Energy Upgrade
inc. room thermostat and thermostatic radiator valves |
Part P |
Refers to the latest accepted
electrical standard which includes a qualification |
Potable |
Drinking Water |
PPM |
Parts per Million |
PRV |
Pressure Relief Valve |
PRV |
Pressure Reducing Valve |
PTFE |
Polytetrafluoreothlene |
Pumping Over |
Where a blockage in the primary
flow and return causes the water in the system to |
PV |
Three Port Diverter valve with
Hot Water Priority |
PV |
Pump Isolation valves |
RCD |
Residual Currect Device |
Return |
The Return Water from the system |
Risk Assessment |
A Detail Contractor Assesment of
Health, Safety and Property Risks associated with a Contract |
STP |
Standard Temperature and
Pressure |
T/E RV |
Twin Entry Radiator Valve |
TRV |
Thermostatic Radiator Valve |
V4043H |
Honeywell 2 Port Valve |
V4044C |
Honeywell 3 Port Priority Valve |
V4073A |
Honeywell 3 Port Valve |
