9.3
Mechanical disassembly
To ensure safe and accurate performance, only informed and trained personnel should
install, operate, repair and maintain this product.
WARNING!
PRESSURE HAZARD
The control valve is subject to pressurized fluids. Isolate the control valve upstream and
downstream.
Always depressurize the control valve before disassembly.
Failure to comply may cause high pressure fluids to leak, resulting in death or serious injury.
9.3.1
Cylinder disassembly (NPS 2-12)
1.
Remove the nuts that secure the cylinder head to the valve body.
2.
Alternately tighten the jack-out screws until the cylinder assembly is free to be lifted
out of the valve body.
3.
Lift the cylinder assembly by the cylinder head. Remove it from the valve body and
set it in a vertical position with the cylinder head on top.
4.
Before removing the screws, place the cylinder assembly in an arbor press to
immobilize the cylinder head. This is to prevent sudden spring pressure from being
released and causing injury or damage.
CAUTION!
SPRING PRESSURE HAZARD
Follow the instructions in step 5.
Failure to comply may cause release of spring pressure, resulting in serious injury or
equipment damage.
5.
Use an Allen wrench to remove the screws that secure the cylinder head to the
cylinder, and then gradually release the arbor press to remove the cylinder head
from the cylinder. Remove the indicator guard and the upper bearing first, if your
valve has a position indicator.
6.
Remove the valve spring, indicator stem, retaining ring, washer, and piston from the
cylinder. Remove only the valve spring and the piston if your valve does not have a
position indicator.
7.
Turn the cylinder over with the ports on top when removing the high pressure seat
ring. Remove the set screw from the seat ring. Turn the seat ring counterclockwise
to remove the seat ring and then remove the O-ring from the cylinder.
Planned maintenance
88
Daniel Models 762, 763, 765, 766 and 767 Control Valves
Содержание Daniel 762
Страница 8: ......
Страница 12: ...Plan 2 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 47: ...Models 762 763 765 766 and 767 Control Valves NPS 16 Figure 1 6 Introduction User manual 37 ...
Страница 52: ...Introduction 42 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 72: ...Prepare the control valve for use 62 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 74: ...Install 64 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 82: ...Installation prerequisites 72 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 88: ...Testing the product 78 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 89: ...Part III Operate Operate User manual 79 ...
Страница 90: ...Operate 80 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 96: ...Maintain 86 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 112: ...Decommission 102 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 113: ...Decommission User manual 103 ...
Страница 114: ...Decommission 104 Daniel Models 762 763 765 766 and 767 Control Valves ...
Страница 115: ...Decommission User manual 105 ...