Emerson Fisher D4- Manuals

Instruction Manual D103042X012 D4 Valve November 2013 5 WARNING When ordered, the valve configuration and construction materials were selected to meet particular pressure, temperature, pressure drop, and controlled fluid conditions. Responsibility for the safety of process media and compatibility of...

Instruction Manual D103042X012 D4 Valve November 2013 6 Spring-to-Close Refer to figure 4.1. Loosen the adjusting screw nut (key 44).2. Turn the adjusting screw (key 31) clockwise to compress the spring or counterclockwise to decrease spring compression. 3. After adjustment, tighten the adjusting sc...

Instruction Manual D103042X012 D4 Valve November 2013 7 Disassembly 1. Remove the loading pressure tubing and any accessories that may hamper disassembly.2. Break the hammer nut (key 6) loose with a hammer. Continue turning the hammer nut by using a hammer or a large adjustable wrench, tightened aro...

Instruction Manual D103042X012 D4 Valve November 2013 8 2. Install the plug (key 2) on the stem (key 47) and insert a new groove pin (key 4).3. Thoroughly clean the seat ring and bonnet threads in the valve body (key 1). Also clean the valve body seat ring gasket surfaces. 4. Apply anti-seize lubric...

Instruction Manual D103042X012 D4 Valve November 2013 9 Figure 2. Fisher D4 Packing Installation VALVE PLUG, BELLEVILLE SPRINGS, AND PACKING RETAINER CORRECTLY INSTALLED AND TIGHTENED BELLEVILLE SPRINGS FULLY ENCLOSED BY THE PACKING RETAINER PACKING RETAINER (KEY 8) UNTIGHTENED, NOTE THE GAP FULLY T...

Instruction Manual D103042X012 D4 Valve November 2013 10 Assembly Refer to figures 2, 3, 4, and 5. Note If your D4 valve assembly has a packing retainer lock ring (see figure 6), proceed to Appendix A. 1. Ensure the upper packing spacer (key 48) is installed, as shown in figure 2.2. Using a non-marr...

Instruction Manual D103042X012 D4 Valve November 2013 11 Refer to figure 4. Before disassembling the actuator, disassemble the valve plug, seat ring, and packing according to instructions in this manual. Disassembly 1. Loosen the adjusting screw nut (key 44) and turn the adjusting screw (key 31) cou...

Instruction Manual D103042X012 D4 Valve November 2013 12 3. Assemble the diaphragm plate assembly. Place the patterned side of the diaphragm (key 15) against the diaphragm plate (key 40). Be sure to turn the diaphragm washer (key 41) so that the side that is beveled on the inside diameter is against...

Instruction Manual D103042X012 D4 Valve November 2013 14 7. Replace the spring (key 30), spring seat (key 29), and adjusting stem nut (key 44) over the adjusting stem. Replace the spring case assembly (key 27). 8. Adjust the initial spring set per the Spring Adjustment section in this manual. Parts ...

Instruction Manual D103042X012 D4 Valve November 2013 17 Repair Kits Note All repair kits are supplied with hydrogenated nitrile bonnet O-ring. FKM(fluorocarbon) bonnet O-ring must be ordered separately whenrequired. Description Part Number * Packing Repair Kit Includes key numbers 4, 8, 12 (2 req'd...

Instruction Manual D103042X012 D4 Valve November 2013 19 Appendix A Note These instructions apply to valves manufactured with serial numbers less than 18679262. Valve Packing WARNING Observe the warning at the start of the Maintenance section. The valve stem packing can only be accessed from within ...

Instruction Manual D103042X012 D4 Valve November 2013 20 Figure 6. Fisher D4 Belleville Spring Procedure BELLEVILLE SPRINGS REASONABLY TIGHT TO SEAT THE PACKING BELLEVILLE SPRINGS FINGER TIGHT, THEN TIGHTEN 1/2 TURN (3 FLATS ON THE RETAINER) BONNET DESIGN FOR VALVES (2006 AND NEWER) WITH SERIAL NUMB...

Instruction Manual D103042X012 D4 Valve November 2013 21 Figure 7. Lubrication Locations on Packing FEMALE PACKING ADAPTER MALE PACKING ADAPTER PACKING RING LUBRICATE WITH 3mm (1/8 INCH BEAD) OF SUPPLIED HIGH PERFORMANCE FLUORINATED GREASE LUBRICATE WITH 3mm (1/8 INCH BEAD) OF SUPPLIED HIGH PERFORMA...

Instruction Manual D103042X012 D4 Valve November 2013 22 8. Install the Belleville springs (key 11). The Belleville springs (key 11) should be single stacked with the I.D. of the inner spring contacting the packing spacer (key 14) and the O.D. of the outer spring contacting the packing retainer (key...