Pressure control valve model V186 or model V86 may be used as: 
- Pressure relief valve when used as a by-pass: it opens when pressure is over the pre-set value. 
- Pressure retaining valve when fitted in-line on main pipe circuit: the outlet pressure remains at a minimum value. 
All wetted parts are in plastics, this allows large field of chemicals in use. 
These equipment protection devices may be fitted by us with other connec-tions: unions or flanges (on request). 

Body parts: PVC, PP or PVDF
Temperature limits
PVC: 0...+60 °C 
PP: -10...+80 °C 
PVDF: -20...+100 °C 
Diaphragm: EPDM, PTFE coated