Operating instructions

Page 17
ProMinent
®
Product description S2Ba/S2Ca
2.2.4 Integrated overflow valve with bleeder function
Task:
The task of the overflow valve is to protect the motor and gear unit against impermissible
overpressure caused by the metering pump.
This function is produced by a spring-loaded ball.
A pressure relief mechanism for the bleeder function is provided.
Design and functional description
(refer to Fig. No. 6 and 7)
Initially, the overflow valve illustrated under item 102 operates as a simple directly controlled
relief valve. As soon as the pressure set with spring item 132 is exceeded, the effective pressure
raises ball item 130. The liquid then flows off into the tank via hose connection item 128.
Overflow valve Sigma/ 2 liquid end, 10 bar PVT Identcode Type: 16050, 16090, 16130
Overflow valve Sigma/ 2 liquid end, 7 bar PVT Identcode Type: 07120, 07220
Overflow valve Sigma/ 2 liquid end, 4 bar PVT Identcode Type: 04350
102 132 130
128
133
139
Fig. 9
61_05-103_00_74-03
BA_SI_036_06_10_EN.p65 08.06.2010, 11:38 Uhr17