Abbreviations and designations
Connections
Abbreviation | Explanation | Use |
---|---|---|
BSW | British Standard Whitworth screw thread | The screw thread most commonly used in England |
BSP | British Standard Pipe | Pipe thread for connections not sealed in the thread |
BSPT | Tapered Whitworth pipe thread DIN 2999 | Threaded pipes and fittings |
NPT | American pipe thread (tapered) | Self-sealing connections |
W 1“ | BSW thread 1 inch = 25.4 mm |
Pipe lines |
G5/8 a | External thread R5/8 | Threaded pipes and fittings |
G3/4 i | Internal thread Rp3/4 | Threaded pipes and fittings |
M 10 | Metric ISO thread M 10 | Screws, fixings, general application |
DN10 | Nominal width 10 | Pipe lines, valves |
PN16 | Nominal pressure 16 | Pipe lines, valves |
Materials
Abbreviation | Explanation | Use |
---|---|---|
EPDM | Ethylene Propylene Diene M-class rubber, elastomer | Gaskets, O-rings, diaphragms |
FPM or FKM | Fluorine Polymer M-class rubber, elastomer, brand name: Viton | Gaskets, O-rings, radial shaft seals, diaphragms |
CSM | Chlorosulfonated Polyethylene, elastomer | Gaskets, shaped items |
NBR | Acrylonitrile Butadiene Rubber, elastomer | O-rings, gaskets |
Hastelloy | Nickel-based alloy | |
IXEF | Polyarylamide, plastic | |
Monel | Nickel-copper alloy (about 65% Ni, 33% Cu, 2% Fe), very solid | |
PE | Polyethylene | Chemical tank |
PP | Polypropylene, plastic | Housing parts, pipes |
PTFE | Polytetrafluoroethylene, plastic, also called Teflon | Housing parts, diaphragm, gaskets |
PVC | Polyvinyl chloride, plastic | Housing parts, pipes |
PVDF | Polyvinylidene fluoride, plastic | Housing parts, pipes |
PMMA | Polymethyl methacrylate, plexiglass | Housing parts |
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