Fuel Operated Inline Pressure Control Valves - 3 & 4 Inch ...

1 SM64502. October 2012. Applicable addition manuals: None Aerospace Group Conveyance Systems Division . Carter Brand Ground Fueling Equipment Maintenance & Repair Manual fuel Operated Inline Pressure Control Valves - 3 & 4 Inch Models 64502 & 64512. SM64502 October 2012. Table of Contents Page Introduction .. 3. Equipment 3. Table of Options and Ordering Information .. 3. Disassembly .. 3. 5. Reassembly .. 5. Test .. 7. Illustrated Parts Catalog .. 8. FIGURE 1 - 3 & 4 Inch fuel Operated In-Line Valve Illustration .. 8. FIGURE 2 - Manifold Parts Breakdown .. 9. Figure 3 - 3 Inch Valve Assembly .. 10. figure 4 - 4 Inch Valve Assembly .. 12. Figure 5A - Inner Piston Seal Installation - Older Units .. 14. Figure 5B - Inner Piston Seal Installation - Newer Units .. 14. Figure 6 - Outer Piston Seal Installation .. 15. NOTE: The information in this manual is to the latest revision of the products listed above at the time of this printing.

2 Eaton reserves the right to change this manual at its discretion. 2. SM64502 October 2012. Maintenance, Overhaul & Test Instructions Models 64502 & 64512 3 & 4 Inch fuel Operated Inline Pressure Control Valves INTRODUCTION. This manual furnishes detailed instructions covering the Inline Pressure Control Valves and the various options maintenance and overhaul of Eaton's Carter brand listed in Section Model 64502, 3 inch & Model 64512, 4 inch fuel Operated EQUIPMENT DESCRIPTION. Models 64502 and 64512 are the latest versions of the A minimum line size 3/8 inches should be used as a fuel 3 & 4 inch fuel Operated Inline Pressure Control Valves sense line. Stainless tubing for this line is recommended. that replace the older 64130 and 64140 models. If two venturis are used, a three-way valve with at least a Because they have many characteristics in common, a -inch internal orifice should be used to obtain proper single manual is used to present both units.

3 Surge Control . The Valves listed above are designed to provide a The opening and closing time of the valve is fixed at constant nominal Pressure at a remote sense point using the industry standard. Either can be changed only by fuel Pressure generated within the system. The Valves are changing a fixed orifice screw in the manifold. Contact direct operating spring loaded piston type Valves . When Carter for information on obtaining different orifice reference fuel Pressure is applied to the proper port on the screws. The check valve under the fuel sense port of manifold, the fuel Control Pressure can be increased or the manifold allows restricted flow out of the piston decreased by the adjustment knob on the manifold. chamber and relatively unrestricted flow into the piston Deadman Control is accomplished using the integral chamber.

4 When a change of approximately psi solenoid valve and a deadman switch. downstream Pressure is created, the check valve will open and flood the piston chamber, causing the valve If the Valves are to be used at a flow rate below to close rapidly. approximately 100 gpm, the reference Pressure may have to be increased to obtain the desired fuel The bleeders on the manifold allow bleeding of air Pressure . The reference Pressure may vary slightly from both the fuel sense line and internally within the from unit to unit. Changing the reference Pressure is manifold. The valve should be installed with the the only way of adjusting fuel discharge Pressure . bleeders in the upward position to facilitate proper bleeding. TABLE OF OPTIONS AND ORDERING INFORMATION. Model 64502 and 64512 have common options as and outlet are Victaulic connections proper bracing listed below.

5 Must be provided. Eaton recommends that at least one end of the valve be flange mounted to the piping system, if both inlet Options to be added to Model 64502 or Model 64512 fuel Operated Inline Pressure Control Valves Option Option Letter Description Letter Description A Adds 12 VDC Solenoid Valve E Adds two Victaulic Adapter Assemblies for use both B Adds 24 VDC Solenoid Valve the inlet and outlet of the unit. (The parts are shipped as loose parts to be used on either end). Mounting D Adds one Victaulic Adapter Assembly for use on fasteners are not provided. either the inlet or outlet of the unit. (The parts are shipped as loose parts to be used on either end). F Adds Relief Valve Cap Mounting fasteners are not provided. Example: 64502AD Basic 3 inch fuel Operated Inline Pressure Control valve with a kit of parts to convert the standard ASA flange on either end to mate a Victaulic fitting and a 12 VDC solenoid valve.

6 64502E - Basic 3 inch Inline fuel Operated Pressure Control valve with a kit of parts to convert the standard ASA flange both ends to mate Victaulic fittings. DISASSEMBLY. Models 64502 & 64512 Note that, due to the the O-ring (from a Carter furnished fitting) or the similarity between the units, this manual covers both gasket that is used to seal the fitting to the valve. units. The appropriate part numbers for the same type MANIFOLD ASSEMBLY - Refer to Figure 2. Remove of part are noted in Section the Manifold Assembly (1-2) from the unit by removing Refer to Figure 1 for this operation. The valve consists Bolt (2-15) and pulling the manifold from the unit being of two basic items, the Valve Assembly (1-1) and the careful to not lose any of the four (4) Retainers (2-13). Manifold Assembly (1-2). If a Victaulic fitting is present Discard O-rings (2-14) when removed.

7 On the outlet of the valve assembly remove it. Discard 3. SM64502 October 2012. Note: Repairs to the Manifold Assembly (1-2) can be NOTE: accomplished without removing the main valve from the vehicle system. Be sure that the Pressure is Shaft (3-27) and nut (3-16) are both stainless steel. relieved before doing this. Nut (3-16) also includes a locking element. Due to this combination there is the possibility when these items Remove Housing Check Valve (2-6) and then remove are disassembled that the threads may gall or become all of the internal parts contained by it. Remove and damaged beyond repair. If it is necessary to discard O-rings (2-4) and (2-5). disassemble these items replace both nuts (3-16) and Do not remove Bleeder Assemblies (2-12) unless one or consider replacing the shaft (3-27). the other is to be replaced due to leakage from its threaded fastener or from the bleeder valve itself.

8 If either are removed, it can be disassembled by removing the Retainer Ring (2-12F) with the proper pliers and all other CAUTION: parts will then come out. Be certain the piston assembly is securely held in Do not remove Orifice Screws (2-10) or (2-17) unless they place and cannot slip, allowing the unit to forcibly are to be replaced to change the opening and closing separate when the first nut (16) is removed. times. If they are removed note the orifice from which they Forcible separation may cause personal injury. Be were removed and place them in separate bags with the careful not to damage the sealing surface of the proper identification since they are very similar. inner or outer piston Unless there is leakage apparent between the solenoid Remove and discard Seal (3-10) and O-ring (3-9). and manifold, it is not necessary to remove the solenoid valve.

9 To remove the Solenoid Valve (2-18) first unscrew With the assembly securely clamped in place, carefully the connector retaining screw on the top of the solenoid remove Nut (3-16) from the piston assembly, use assembly. This will provide access to the two screws Lockease or similar as an aid in removing the nut. holding the solenoid to the manifold. There are three O- Remove Washer (3-17) from piston assembly. Slowly rings (2-20) used to seal the interface between the open the clamping device allowing the spring force to solenoid and the manifold. Remove and discard them. cause the inner piston assembly to follow the clamp until all spring force is relieved. Then carefully remove the Do not remove the Relief Valve (2-9) unless there is a clamp and lift the Inner Piston (3-20) from the Spring (3- problem with it. Then, if the Relief Valve (2-9) is lock 26).

10 Remove the two bronze Washers (3-29) from the wired to Screw (2-16) and it needs servicing, cut the Inner Piston (3-20) then remove Spring (3-26) and Teflon wire. Do not remove Screw (2-16), it is used only to Washer (3-30) from the Guide (3-22). Remove O-ring (3- safety the relief valve to stop tampering. Remove and 18) and Washer (3-19) from the end of Shaft (3-27). discard the entire assembly. Discard O-ring (3-18). Remove Screw (2-8) and O-ring (2-7) and discard the Using two thin 3/8-24 UNF-2B nuts as jam nuts on the O-ring. shaft (3-27) where Nut (3-16) was removed above, Do not remove Plug (2-19) unless there is leakage remove Nut (3-16) and Washer (3-17) retaining the from around the thread. outer Piston (3-25) from the Shaft (3-27). 3 INCH VALVE ASSEMBLY Refer to Figure 3 for Remove Screws (3-28) from spring Guide (3-22) to this operation.