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740A Double Disc Check Valve Operation and Maintenance Manual Job Name: Contractor: Date: Document #:DDC Revision Date: 6/24/13 740A Double Disc Check Valves SAFETY MESSAGES All safety messages in
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How to fill out double disc check valve
How to fill out a double disc check valve:
01
Start by locating the double disc check valve in your system. It is typically installed in a pipeline where flow needs to be controlled in one direction.
02
Before filling out the valve, make sure to familiarize yourself with its components, including the body, discs, seats, and any necessary accessories such as actuators or handles.
03
Inspect the valve for any signs of damage or wear. If there are any issues, it is important to address them before attempting to fill out the valve.
04
Begin the filling process by closing any upstream and downstream valves, isolating the valve from the rest of the system. This ensures that the filling operation is done safely and effectively.
05
Make sure the valve is in the closed position by aligning the discs perpendicular to the flow direction. This prevents any unintentional flow during the filling process.
06
Attach a suitable filling apparatus to the valve, such as a hose or pipe, ensuring a secure connection.
07
Gradually open the upstream valve to allow the appropriate fluid or gas to flow into the valve while closely monitoring the filling process.
08
Once the valve is filled, check for any leaks or abnormal pressure buildup. If any issues are detected, shut off the upstream valve immediately and rectify the problem before continuing.
09
Once the valve is successfully filled and functioning correctly, open the downstream valve to establish the desired flow in the system.
Who needs a double disc check valve:
01
Industries that require strict one-directional flow control in their piping systems often utilize double disc check valves. These can include sectors such as oil and gas, chemical processing, water treatment, and power generation.
02
Double disc check valves are particularly valuable in applications where backflow prevention is crucial, ensuring that fluids or gases do not flow in the reverse direction and cause potential damage or contamination.
03
The use of double disc check valves is common in systems that experience varying pressures or sudden pressure surges, as these valves provide reliable protection against such conditions.
In summary, filling out a double disc check valve involves properly locating the valve, inspecting it for any damage, closing upstream and downstream valves, aligning the discs, attaching a filling apparatus, gradually opening the upstream valve, and checking for leaks or abnormal pressure. Double disc check valves are necessary in industries that require one-directional flow control, backflow prevention, and protection against pressure surges.
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What is double disc check valve?
Double disc check valve is a type of valve that allows flow in one direction and automatically prevents backflow in the opposite direction.
Who is required to file double disc check valve?
Manufacturers, distributors, and users of double disc check valves are required to file them.
How to fill out double disc check valve?
Double disc check valves can be filled out by providing information such as serial number, size, material, pressure rating, and test results.
What is the purpose of double disc check valve?
The purpose of double disc check valve is to prevent backflow and ensure flow in one direction.
What information must be reported on double disc check valve?
Information such as serial number, size, material, pressure rating, and test results must be reported on double disc check valve.
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