KNF NF 1.100 EX Operating And Installation Instructions page 6

Diaphragm liquid pump NF 1.100 EX
KNF Flodos AG BA_NF1.100EX_EN_05_152147
English translation of original Operating and Installation Instructions
2.4.5. Types of protection
Designation Description
bh Protection by Control of Ignition Source
h Constructional safety
kh Liquid encapsulation
d Flameproof enclosure
e Increased safety
i Intrinsic safety
p Pressurisation
m Encapsulation
o Oil immersion
q Powder filling
nA Non-sparking
nC Several meanings
nR Vapour proof housing
nL Energy-limited
(varies between North America and Europe)
nP Simplified pressurisation
Tab. 6
Use
6