Spark spark plug ??-423

Designed for ignition of fuel-air mixture in heaters of PZhD 30 and PZhD 600 types with spark ignition.
Brief description:
-non-disassembled, consists of metal body, ceramic insulator, centre and side electrode, contact rod;
-construction of the plug allows cleaning of electrodes and thermal cone of insulator from soot;
-spark formation on the candle electrodes is uninterrupted at gas pressure from 49 to 59 kPa;
-tight at differential pressures, from 147 to 196 kPa;
-still heat-resistant after a single heating of the screw-in part with air at a temperature of 700 ° C for 10 minutes;
- is made in general climatic version "O" according to GOST 15150;
-guaranteed resource of 500 hours, 2500 switches with duration not more than 30 s.