Surge-Suppression Air Valves

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Surge-Suppression Air Valves are Combination Air Valves equipped with Regulated-Exhaust Devices (slow-closing devices) to limit secondary surges during column separation. The Val-Matic Surge-Suppression Air Valve provides full airflow into the pipeline during vacuum conditions to prevent a vapor pocket (vacuum) from forming.

Product Overview

  • Available in sizes 1/2" - 20"
  • Provides full vacuum protection for the pipeline
  • Provides controlled venting to suppress surges in pipeline
  • Minimizes water blow-by during Air Valve closure
  • Allows the use of smaller valve size by utilizing a maximum sizing differential pressure of 5 psig
  • Releases entrained air while pipeline is operating to maintain pumping efficiency
  • Manufactured under a certified ISO 9001 quality system
  • Automated Sizing Program

Certifications

Features

  • Restrictor disc provides regulated exhaust to limit secondary surges during column separation
  • Ability to adjust air exhaust for greater surge suppression
  • Provides full vacuum flow port for maximum pipeline protection

Specifications

Valve Size Product Description Drawing Number
1/2" - 20" Air/Vacuum Valve VM-100-S
1" - 20" Combination Air Valve VM-200C-S
1/2" - 20" Surge-Suppression Air Valve VM-200CSSA-S
1" - 8" Wastewater Combination Air Valve VM-800-S

Materials of Construction

Valve Size Product Description Drawing Number
2 1/2" - 12" 1200AS Regulated Exhaust Device VM-1200AS.1-M
14" - 42" 1200S Regulated Exhaust Device VM-1214S.1-M
1" - 2" 1201S Regulated Exhaust Device - Threaded VM-1201S-M

Dimensions

Regulated Exhaust Device

Valve Size Product Description Drawing Number CAD Version
3" - 12" 1200AS Regulated Exhaust Device VMC-1200AS CAD-1200AS
14" - 20" 1200S Regulated Exhaust Device VMC-1214S CAD-1214S
1" - 2" 1201S Regulated Exhaust Device - Threaded VM-1201S  

Air/Vacuum Valve

Valve Size Product Description Drawing Number CAD Version
1" - 2" 101SS Surge-Suppression Air/Vacuum Valve VMC-101SS  
3" 103SSA Surge-Suppression Air/Vacuum Valve VM-103SSA  
4" - 12" 104SSA Surge-Suppression Air/Vacuum Valve VM-104SSA  

Combination Air Valve - Dual Body

Valve Size Product Description Drawing Number CAD Version
3" 103SSA/22 Surge-Suppression Combination Air Valve - Dual Body VM-103SSA/22  
4" - 8" 104SSA/22 Surge-Suppression Combination Air Valve - Dual Body VM-104SSA/22  
4" - 8" 104SSA/38 Surge-Suppression Combination Air Valve - Dual Body VM-104SSA/38  
10" - 20" 110FSSA/38 Surge-Suppression Combination Air Valve - Dual Body VM-110FSSA/38  

Combination Air Valve - Single Body

Valve Size Product Description Drawing Number CAD Version
1" - 2" 201CSS Surge-Suppression Combination Air Valve VMC-201CSS  
3" - 4" 203CSSA Surge-Suppression Combination Air Valve VM-203CSSA  
6" - 8" 206CSSA Surge-Suppression Combination Air Valve VMC-206CSSA CAD-206CSSA

Wastewater Air/Vacuum Air Valve

Valve Size Product Description Drawing Number CAD Version
1" - 2" 301SS Wastewater Surge-Suppression Air/Vacuum Valve VM-301SS  
3" 303SSA Wastewater Surge-Suppression Air/Vacuum Valve VM-303SSA  
4" - 8" 304SSA Wastewater Surge-Suppression Air/Vacuum Valve VM-304SSA  

Wastewater Combination Air Valve

Valve Size Product Description Drawing Number CAD Version
1" - 2" 801SS Wastewater Surge-Suppression Combination Air Valve VMC-801SS CAD-801SS
3" - 4" 803SSA Wastewater Surge-Suppression Combination Air Valve VMC-803SSA CAD-803SSA  

Manuals

Valve Size Product Description Drawing Number
1/2" - 3" Surge-Suppression Air/Vacuum Valve SSAVV-OM2
4" - 20" Surge-Suppression Air/Vacuum Valve SSAVV-OM1
4" - 20" Surge-Suppression Combination Air Valve SSCAV-OM1
4" - 20" Surge-Suppression Combination Air Valve - Spanish SSCAV-OM1-SP
1" - 4" Wastewater Surge-Suppression Combination Air Valve WSSAV-OM2

Technical Data

Product Description Drawing Number
Theory, Application and Sizing of Air Valves White Paper
Application Chart Chart
Exterior Metal Primer SS-2564