Jafar 2911 Посібник з експлуатації та технічного обслуговування - Сторінка 9

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Також для Jafar 2911: Посібник з експлуатації (8 сторінок)

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The figure below shows the method for coupling the gate valve with its drive actuator and the valve
orientation diagrams:
1. Valve; 2. Nut; 3. Gasket; 4. Pipeline flange; 5. Washer; 6. Fastening bolt

4.3 OPERATION

The gate valve shall be operated according to all relevant requirements for cut-off valves, i.e. either in fully
open or fully closed positions. Leaving the gate valve partially opened (or closed) may result in seal failure. To
ensure full performance, switch the gate valve periodically (once a year, from fully open to fully closed).
Overruning the valve operating limits may damage the valve
and the manufacturer's suretyship liability shall not apply.

4.4 GENERAL

This Manual applies to all Group 2000 products designed for equipping with actuators (i.e. gate valves of
various connection end types) and manufactured by FA. JAFAR S.A.:
- Cast iron flanged wedge gate valves with soft seals
- Gate valves with soft seals with threaded connection ends
- Gate valves with soft seals and ferrule connection ends
- Cast iron flanged wedge gate valves with soft seals for natural gas systems
- Cast iron annular wedge gate valves

4.5 OCCUPATIONAL HEALTH AND SAFETY

The valves are eligible for the OHS guidelines and recommendation concerning installation of pipelines
and devices for water supply stations, heat power plants, water treatment plants, sewage treatment plants,
pumping stations and other facilities, and eligible for the Polish Regulation concerning general OHS laws (use of
OPERATION AND MAINTENANCE MANUAL
Recommended
Permitted
Not permitted
12-2016
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