9.3.2
Cylinder disassembly NPS 16 valve only
Important
The 16" valve does NOT disassemble as a complete assembly. The first step is to remove the cylinder
head from the valve body.
Prerequisites
The construction of the NPS 16 valve cylinder assembly is different from all other valve
cylinder assemblies and requires different procedures. The following tools are needed to
disassemble and reassemble the control valve.
•
Socket wrench
•
Adjustable wrench
•
Extended allen wrench set
•
Mallet and cold chisel
•
Appropriate lifting gear and sling
•
(2) all thread rods, 3/4" no. 10x18"-24" long
•
(2) 3/4" no. 10x2" bolts with 3/4" flatwashers
•
Hand pump
•
Drip pan
•
(3) hoist rings 1"-8" nnc 10,000 lb, part number 1-504-90-094
Procedure
1.
Completely block all product flow to the valve and drain the process line.
2.
Disconnect "Y" port on top of cylinder head and relieve pressure in the valve.
WARNING!
SPRING FORCE HAZARD
Use extreme caution when removing the cylinder head from the valve body.
Failure to disassemble or reassemble the valve without carefully being aware of the
force of the spring against the cylinder head may result in death, serious injury or
damage to the equipment.
WARNING!
SPRING TENSION HAZARD
Do not remove jack screws (long bolts). Jack screws are spring tension retaining devices
and must NOT be tampered with. Follow disassembly procedure above.
Failure to comply with instructions may result in serious personal injury or damage to
the equipment.
Planned maintenance
User manual
89
Summary of Contents for Daniel 762
Page 8: ......
Page 12: ...Plan 2 Daniel Models 762 763 765 766 and 767 Control Valves ...
Page 47: ...Models 762 763 765 766 and 767 Control Valves NPS 16 Figure 1 6 Introduction User manual 37 ...
Page 52: ...Introduction 42 Daniel Models 762 763 765 766 and 767 Control Valves ...
Page 72: ...Prepare the control valve for use 62 Daniel Models 762 763 765 766 and 767 Control Valves ...
Page 74: ...Install 64 Daniel Models 762 763 765 766 and 767 Control Valves ...
Page 82: ...Installation prerequisites 72 Daniel Models 762 763 765 766 and 767 Control Valves ...
Page 88: ...Testing the product 78 Daniel Models 762 763 765 766 and 767 Control Valves ...
Page 89: ...Part III Operate Operate User manual 79 ...
Page 90: ...Operate 80 Daniel Models 762 763 765 766 and 767 Control Valves ...
Page 96: ...Maintain 86 Daniel Models 762 763 765 766 and 767 Control Valves ...
Page 112: ...Decommission 102 Daniel Models 762 763 765 766 and 767 Control Valves ...
Page 113: ...Decommission User manual 103 ...
Page 114: ...Decommission 104 Daniel Models 762 763 765 766 and 767 Control Valves ...
Page 115: ...Decommission User manual 105 ...