Armstrong OB 2000PT Instrucciones de instalación, uso y mantenimiento - Página 4
Navegue en línea o descargue pdf Instrucciones de instalación, uso y mantenimiento para Unidad de control Armstrong OB 2000PT. Armstrong OB 2000PT 6 páginas. Pressure/temperature regulating valve
Imprimir página
2. Remove the four hex head bolts (38) from the pilot
body (2) to remove the pressure pilot from the
main valve body (1). Care should be taken when
doing this procedure. The main valve is held by a
spring (13) which is compressed. Once bodies
are apart, remove spring plate (14), screen (15),
main valve spring (13) and main valve (6).
3. Use a T-Bar wrench to remove valve seat (7).
4. Remove all nuts and bolts (41) from diaphragm
case separating the top diaphragm case (4) and
the bottom diaphragm case (5), main diaphragms
(12), retainer (11) and main spindle (9).
Assembly – Hints
1. Check to make sure there are not scratches on
the main valve or seat. If there are scratches,
apply lapping compound and relap valve and seat.
2. Make sure all sliding parts (main spindle) move
freely.
Figure 4-1
For Steam Service
Bellows Guide (9)
Bottom Bellows
Plate (8)
Bellows Follower (10)
Sensor Bellows (35)
Capillary Ring Union (22)
Flexible Tube (27)
Capillary Tube (26)
OB 2000PT Pilot Valve Assembly
Body (1)
Pilot Valve
Seat (4)
Pilot Valve
and Stem (3)
Pilot Spindle (28)
Gasket (19)
Guide (7)
Gasket (20)
Bottom Bellows
Seal (5)
Packing Nut (36)
3. Before assembling the main diaphragm (12),
make sure the main valve (6) is supported
correctly by the main valve spring (13).
4. Confirm that the retainer (11) and main spindle (9)
are connected correctly.
5. * Make sure the main diaphragm case has
Never Seize
cleaned before the diaphragms are installed.
Proper performance can not be obtained in case
of wrong thickness.
6. Tighten hex bolt and nuts uniformly.
Note: Repair kits are available for temperature
pilot valve, main valve, tubing, gaskets, liquid
gasket and diaphragms.
*Please note that most valves will require liquid
gasket for assembly on the main diaphragms.
Nameplate (29)
Rivet (30)
Top Spring Plate (13)
Adjusting Spring (14)
Bottom Spring
Plate (11)
Spring Plate
Follower (9)
Top Bellows Plate (6)
Bushing (24)
4
®
applied and the surface thoroughly
Adjusting Screw (15)
Lock Nut (16)
Bolt (17)
Lock Washer (18)
Spring Housing (2)
Top Bellows
Seal (5)
Gasket (20)
Thermal Bulb (23)