10
| 304 Challenger
Series
Via delle Acacie 8 - Z.I. D4 - P.O. Box 64 - 28075 GRIGNASCO (N0) ITALY
Export dept. +39 - 0163 - 415 221 / 222
Fax. +39 - 0163 - 411 914
Web
www.riv-vg.com www.velattagroup.com
E-mail [email protected]
VACUUM RELIEF VALVES - SETTING INSTRUCTION
1) Remove the protection cap “A”
2) Turn the spring-tightener “B”, through a
spanner “C” , Clockwise to increase the
pressure, Anti-clockwise to reduce the
pressure
3) Once obtained the desired pressure, screw
down the lock nut “D”
4) Screw down the protection cap and fix it
using the rings “E” situated on the valve
body and on the cap
A
C
B
D
E
1� Remove the protection cap “A”
2� Turn the spring-tighter “B”, through a spanner “C”, clockwise to
increase the pressure, counter-clockwise to reduce the pressure
3� Once obtained the desired pressure, screw down the lock nut “D”
4. Screw down the protection cap and fix it using the rings “E”
situated on the valve body and on the cap
Picture 1�
1� Unscrew the lock nut “A”
2� Turn the spring-tightener “B”
Picture 2�
1� Once obtained the desired pressure, screw down the lock nut “A”
Picture 3�
1� Fix the setting, using the rings “C” Situated on the body and on the
spring tightener
Pressure and Vacuum Relief Valve Setting Instructions
Vacuum Relief Valve
Pressure Relief Valve
Via delle Acacie 8 - Z.I. D4 - P.O. Box 64 - 28075 GRIGNASCO (N0) ITALY
Export dept. +39 - 0163 - 415 221 / 222
Fax. +39 - 0163 - 411 914
Web
www.riv-vg.com www.velattagroup.com
E-mail [email protected]
PRESSURE RELIEF VALVES - SETTING INSTRUCTION
Picture 1
1) Unscrew the lock nut
"A”
2) Turn the spring-tightener “B”,
Clockwise to increase the pressure.
Anti-clockwise to reduce the pressure
Picture 2
Once obtained the desired pressure, screw
down the lock nut “A”
Picture 3
Fix the setting, using the rings “C”
Situated on the body and on the spring-
tightener
B
1
2
3
A
A
C
www.fraserwoods.ca
