Manual

10
Class 1 Valve Manual
p/n: 119138
o Electric motors and wiring are protected by a circuit breaker. DO NOT remove or
bypass the circuit breaker, as severe damage to the electric motor or apparatus
wiring could occur.
• Be careful that NO part of your body (head, feet, arms, legs, fingers, hair, etc.) is in an area
of rotating or moving parts.
• Certain internal parts of the Class 1 valve assembly may be under tension. When servicing
the valve, wear eye protection and exercise care when removing these parts.
• Fasteners used for the assembly of the Class 1 valves are plated Grade 8 steel.
• Foreign materials, like metal chips or shavings, can destroy the plastic seals on the valves.
Machine connected parts and remove foreign materials prior to installing the Class 1 valve.
• If your Class 1 valve includes the Slow-Close option, do not tamper with the slow-close
actuator. There are no serviceable parts inside. The actuator must never be disassembled.
Contact Class 1 for a replacement assembly.
o Current NFPA 1901 Standards specify that a minimum of three seconds is required
to open or close a 3” or larger valve.
• DO NOT exceed the rated Class 1 valve operating pressure, shown below:
MODEL
RATED OPERATING PRESSURE
C20 (2.0”)
400 psi (1724 kPa)
C25 (2.5”)
400 psi (1724 kPa)
C30 (3.0”)
400 psi (1724 kPa)
4. Safety Information