Subscribe to Our Youtube Channel
Related Manuals for Flowserve NAF Trunnball DL Series
Summary of Contents for Flowserve NAF Trunnball DL Series
- Page 1 USER INSTRUCTIONS NAF Trunnball DL Ball Valves Installation Operation Maintenance FCD NFENIM4168-01-A4 01/15 Experience In Motion...
-
Page 2: Table Of Contents
NAF Trunnball DL Ball Valves NFENIM4168-00-A4 01/15 Contents SAFETY General Lifting Receiving Inspection Installation Commissioning Bill of Materials and Recommended Spare Parts Kits Ordering of Spare Parts Maintenance 8.1 Removing the valve from the pipework 8.2 Disassembling the valve for inspection and replacement of ball, seats and stem packing 8.3 Valves with PTFE seat rings 8.4 Valves with hard chrome plated ball and seat rings in Alloy 6... -
Page 3: Safety
• Always check that the valve type and material is suitable for its intended use. This applies especially to highly oxidizing and corrosive media. Observe also the risk of erosion or explosion, as well as decaying medium. If in doubt, always request a written recommendation from Flowserve. 1 General This instruction provides necessary information for the correct handling of the NAF Trunnball DL ball valve. For additional equipment used together with the valve, please refer to their corresponding instructions. -
Page 4: Lifting
NAF Trunnball DL Ball Valves NFENIM4168-00-A4 01/15 2 Lifting 4 Installation All lifting must be carried out on the valve itself and not on the Before installing the valve, ensure the pipework is free from impurities, actuator. The mounting connection between the valve and the that the pipe end connectors between which the valve is to be actuator is designed principally for carrying the operating torque and installed are parallel and are correctly aligned, and that the distance... -
Page 5: Bill Of Materials And Recommended Spare Parts Kits
Anti-friction washer Body seal Seat seal Screw Stud Bolt Trunnion plate Trunnion bearing Spring Bearing washer Material and design of the parts vary depending on the version of the valve. Version is Quantity depending on size of the valve. determined by NAF No. on the identification plate of the valve. flowserve.com... -
Page 6: Ordering Of Spare Parts
NAF Trunnball DL Ball Valves NFENIM4168-00-A4 01/15 7 Ordering of Spare Parts Shut off all compressed air connections and isolate all electrical connections to the actuator. When placing an order for spare parts, specify: Disconnect all compressed air lines and electric cables connected • NAF-No: specified on the identification plate of the valve. -
Page 7: Valves With Ptfe Seat Rings
With the ball assembly in place in the main body (1), put the remaining four pins (22) into the trunnion plates (21) with the tapered end facing up. Put a new body seal (14) on the body cover (2) so the sharp end will face the main body (1) when assembled. flowserve.com... -
Page 8: Valves With Hard Chrome Plated Ball And Seat Rings In Alloy
8.4. If the sealing surfaces are damaged, we recommend that Check the sealing surfaces of the seat rings (4). Minor damage the valve is returned to Flowserve for overhaul. This applies in to the seats can be rubbed down with fine emery cloth. Check the particular if the ball must be ground before lapping. Assemble the seats on a face plate to ensure that they are perfectly flat. -
Page 9: Fitting An Actuator To The Valve
11 Fit cover (7) and tighten the screws (16) alternately in several Note: The direction of closure must always be clockwise, as viewed stages. from the actuator. 12 Fit the circlip (6). 13 Assemble and, if possible, pressure test, the valve as described in section 8.3. flowserve.com... - Page 10 NAF Trunnball DL Ball Valves NFENIM4168-00-A4 01/15 Page intentionally left blank...
- Page 11 NAF Trunnball DL Ball Valves NFENIM4168-00-A4 01/15 Page intentionally left blank flowserve.com...
- Page 12 Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, this Flowserve product is designed to perform its intended function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used in numerous applications under a wide variety of industrial service conditions. Although Flowserve can (and often does) provide general guidelines, it cannot provide specific data and warnings for all possible applications. The pur-...
Need help?
Do you have a question about the NAF Trunnball DL Series and is the answer not in the manual?
Questions and answers