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Manual No.

SFCV-OM1-9

Swing-Flex



Check Valve

Operation, Maintenance and

Installation Manual

INTRODUCTION 1

RECEIVING AND STORAGE 1

DESCRIPTION OF OPERATION 1

INSTALLATION 2

VALVE CONSTRUCTION 2

MAINTENANCE 2

TROUBLESHOOTING 3

DISASSEMBLY 3

RE-ASSEMBLY 3

BACKFLOW ACTUATOR (OPTIONAL) 4

MECHANICAL INDICATOR (OPTIONAL) 5

LIMIT SWITCH (OPTIONAL) 5

BOTTOM OIL DASHPOT (OPTIONAL) 6

PARTS AND SERVICE 7

WARRANTY 7

VAL-MATIC

VALVE AND MANUFACTURING CORP.

905 Riverside Dr. ● Elmhurst, IL 60126

Phone (630) 941-7600 ● Fax (630) 941-8042

www.valmatic.com

Summary of content (8 pages)

PAGE 1
Manual No. SFCV-OM1-9 Swing-Flex Check Valve Operation, Maintenance and Installation Manual INTRODUCTION 1 RECEIVING AND STORAGE 1 DESCRIPTION OF OPERATION 1 INSTALLATION 2 VALVE CONSTRUCTION 2 MAINTENANCE 2 TROUBLESHOOTING 3 DISASSEMBLY 3 RE-ASSEMBLY 3 BACKFLOW ACTUATOR (OPTIONAL) 4 MECHANICAL INDICATOR (OPTIONAL) 5 LIMIT SWITCH (OPTIONAL) 5 BOTTOM OIL DASHPOT (OPTIONAL) 6 PARTS AND SERVICE 7 WARRANTY 7 VAL-MATIC® VALVE AND MANUFACTURING CORP. 9 05 R i ver s id e D r .
PAGE 2
VAL-MATIC'S SWING-FLEX CHECK VALVE OPERATION, MAINTENANCE AND INSTALLATION INTRODUCTION The Swing-Flex Check Valve has been designed to give years of trouble-free operation. This manual will provide you with the information needed to properly install and maintain the valve and to ensure a long service life. The valve is opened by the fluid flow in one direction and closes automatically to prevent flow in the reverse direction.
PAGE 3
INSTALLATION Correct installation of the Swing-Flex is important for proper operation. It may be installed in either horizontal or vertical flow-up applications. However, when horizontal, the valve must be installed with the nameplate facing up and the cover level. In all installations, the flow arrow cast in the valve cover must be pointed in the direction of flow during normal system operation. WARNING Do not use threaded holes in cover for lifting the valve. Serious injury may result.
PAGE 4
TROUBLESHOOTING RE-ASSEMBLY Several problems and solutions are presented below to assist you in troubleshooting the valve assembly in an efficient manner. All parts must be cleaned. Gasket surfaces should be cleaned with a stiff wire brush in the direction of the serrations or machine marks. Worn parts, gaskets and seals should be replaced during reassembly.  Leakage at Bottom Actuator: Remove line pressure and exercise actuator.
PAGE 5
BACKFLOW ACTUATOR FIELD INSTALLATION AND MAINTENANCE (OPTIONAL) BACKFLOW ACTUATOR OPERATION: An optional backflow actuator assembly is available which can be easily installed in the field. The actuator is not designed to operate at the valve’s Maximum Working Pressure rating. Therefore, prior to using the actuator, close the pump isolation valve and bleed off line pressure. To operate, turn the handle clockwise. This will open the valve disc allowing backflow through the valve.
PAGE 6
MECHANICAL INDICATOR (OPTIONAL) LIMIT SWITCH (OPTIONAL) The mechanical indicator is an option that fits into the cover and can easily be installed in the field by going through the following steps. The mechanical indicator is used to visually indicate when the valve is opened or closed. The limit switch is used in conjunction with the Mechanical Indicator. The standard limit switch is MICROSWITCH Model Number 914CE20-3.
PAGE 7
BOTTOM MOUNTED OIL DASHPOT FIELD INSTALLATION AND MAINTENANCE (OPTIONAL) DASHPOT FIELD INSTALLATION: The bottom dashpot is supplied as an optional assembly from the factory. This unit provides control of the disc’s final 10% travel to the closed position to reduce valve slam and water hammer. The 10% travel time is adjustable between 1 and 5 seconds. CHECKING OIL AND GREASE LEVELS: 1. The check valve should be closed. 1. Depressurize and drain the valve and pipeline. 3.
PAGE 8
PARTS AND SERVICE Parts and service are available from your local representative or the factory. Make note of the valve Model No and Working Pressure located on the valve nameplate and contact: Val-Matic Valve and Mfg. Corp. 905 Riverside Drive Elmhurst, IL 60126 Phone: (630) 941-7600 Fax: (630) 941-8042 www.valmatic.com A sales representative will quote prices for parts or arrange for service as needed.