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 |