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Table of Contents
A-207 Re-Assembly Instruction Supplement
1 Preparation
These instructions are specific to the reassembly of the A-207 Vacuum Relief Valves. For
more maintenance and installation instructions, please refer to Midland's Installation,
Operation and Maintenance Instructions for A-205/A-222 Vacuum Relief Valves.
• Exercise normal safety precautions for the commodity involved.
• Discard all soft parts being replaced.
2 Valve Details
ITEM
PART NAME
QTY.
NO.
1
BODY
1
2
1
SPRING
3
1
SPRING SEAT
4
1
LOCK NUT
5
1
STEM
6
1
PRESSURE SEAL
SCREEN
7
1
ASSEMBLY
8
1
RETAINER RING
9
1
NAMEPLATE
10
2
DRIVE SCREW
MATERIAL
STAINLESS STEEL (PASSIVATED)
STAINLESS STEEL
STAINLESS STEEL
STAINLESS STEEL
STAINLESS STEEL (PASSIVATED)
WHITE NEOPRENE *
STAINLESS STEEL
STAINLESS STEEL
STAINLESS STEEL
STAINLESS STEEL
* Alternate materials available
VACUUM
PART NO.
SETTING
(PSI)
207-11-SS-PA
0.75
SEE TABLE
207-3-SS
207-41-SS
207-52-MO-PA
205-6-WNE
207-7-SS
207-8-SS
207-90-SS
763-11-SS
A-207 Re-Assembly Instruction Supplement, Ver. 0.0
SPRING
PART
NUMBER
207-2-MO
3
207-21-MO
Issue Date: April 27, 2020
Page 1 of 4
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Summary of Contents for Midland A-207
- Page 1 A-207 Re-Assembly Instruction Supplement 1 Preparation These instructions are specific to the reassembly of the A-207 Vacuum Relief Valves. For more maintenance and installation instructions, please refer to Midland’s Installation, Operation and Maintenance Instructions for A-205/A-222 Vacuum Relief Valves. • Exercise normal safety precautions for the commodity involved.
- Page 2 Run a steel rule under the lower side of the quad-ring to make sure the back side of the quad-ring is well seated. Figure 5 A-207 Re-Assembly Instruction Supplement, Ver. 0.0 Issue Date: April 27, 2020 Page 2 of 4...
- Page 3 (item 7) on top of valve as shown. Insert retainer ring (item 8) in groove as shown. Figures 10-11 A-207 Re-Assembly Instruction Supplement, Ver. 0.0 Issue Date: April 27, 2020 Page 3 of 4...
- Page 4 © Copyright 2016, OPW. Printed in USA. © 2016 Delaware Capital Formation, Inc. All Rights Reserved.
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