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Consolidated 1900
Dresser Consolidated 1900 User Manual
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Consolidated
INST
ALLA
TION, OPERA
TION
AND MAINTENANCE MANUAL
Consolidated
Safety Relief V
alve
T
ype 1900
Industrial Valve Operation
Dresser Valve and Controls Division
Alexandria, Louisiana 71309-1430 (USA)
®
Design Options
Include:
Bellows
(-30),
O-Ring Seat
(DA),
Liquid T
rim
(LA)
and
Thermodisc
®
(TD)
®
CON-2
Revised 7/97
2
Table of Contents
Table of Contents
3
Safety Alerts
4
Terminology for Safety Relief Valves
6
Design Features and Nomenclature
7
Handling, Storage and Pre-Installation
10
Recommended Installation Practices
11
Mounting Position
11
Inlet Piping
11
Outlet Piping
13
Introduction
7
Disassembly Instructions
14
General Information
14
Specific Steps
14
Cleaning
16
Parts Inspection
16
Nozzle
16
Nozzle Seat Width
18
Nozzle Bore
18
1900, 1900-30 Standard Disc
18
1900 Series Thermodisc
19
Disc Holder
20
Guide
23
Spindle
23
Spring
23
Maintenance Instructions
24
General Information
24
Lapping Nozzle Seats (Non O-Ring Styles)
24
Nozzle Seat Widths-Lapped
24
Lapping Disc Seats
26
Precautions and Hints for Lapping Seats
26
Lapping O-Ring Seating Surfaces
26
Reconditioning of Laps
27
Remachining Nozzle Seats and Bores
27
Remachining the Disc Seat
28
Checking Spindle Concentricity
29
Set Pressure Change-Disc Holder
30
Checking Lift on Restricted Lift Valves
30
Reassembly
31
General Information
31
Lubrication
32
Specific Steps
32
Setting and Testing
37
General Information
37
Test Equipment
37
Test Media
37
Setting the Valve
37
Set Pressure Compensation
37
Seat Tightness Testing
39
Hydrostatic Testing and Gagging
40
Manual Popping of the Valve
41
Conversion of Type 1900 Flanged Safety Relief Valves from Conventional to Bellows Type, and Vice Versa
42
General Information
42
Conversion from Conventional to Bellows Type
43
Conversion from Bellows to Conventional Type
43
Trouble Shooting Type 1900 Valves
44
Maintenance Tools and Supplies
44
Replacement Parts Planning
46
Basic Guidelines
46
Replacement Parts List
46
Identification and Ordering Essentials
46
Genuine Dresser Parts
47
Recommended Spare Parts for the 1900 Safety Relief Valves
48
Manufacturer's Warranty, Field Service & Repair Program
50
Warranty Information
50
Field Service
50
Factory Repair Facilities
50
Safety Relief Valve Maintenance Training
50
4
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Dresser Consolidated 1900 Specifications
General
Brand
Dresser
Model
Consolidated 1900
Category
Control Unit
Language
English
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