Diaphragm Valves

Diaphragm valves are designed to regulate the flow of liquids and gases by using a flexible diaphragm to create a secure seal. These valves are ideal for applications where the transported media is corrosive, abrasive, or requires sanitary handling. Their simple yet effective design minimizes the risk of contamination, making them widely used in industries such as chemical processing, pharmaceuticals, food and beverage, and water treatment.


Centro offers a comprehensive selection of diaphragm valves in manual and pneumatic actuated designs to suit various operational needs. Whether you require precise hand-operated flow control or an automated valve for high-efficiency processing, we have the right solution.

Types of Diaphragm Valves We Offer

  • Manual Diaphragm Valves – Hand-operated for precise control in low-pressure systems
  • Pneumatic Actuated Diaphragm Valves – Use compressed air for automated on/off operation
  • Weir-Type Diaphragm Valves – Provide excellent sealing for corrosive and particulate-laden fluids
  • Straight-Through Diaphragm Valves – Offer minimal flow resistance for high-purity applications
  • Sanitary Diaphragm Valves – Designed for hygienic industries, including food, beverage, and pharmaceuticals

Why Choose Diaphragm Valves from Centro?

  • Superior sealing performance for corrosive, abrasive, and sanitary applications
  • Available in a variety of materials, including stainless steel, plastic, and lined options
  • Suitable for industries such as chemical processing, pharmaceuticals, biotechnology, and water treatment
  • Sourced from trusted manufacturers to ensure durability, reliability, and compliance with industry standards


Centro provides high-quality diaphragm valves designed for long-lasting performance. Browse our selection and order online today, or contact our team for expert assistance in selecting the right valve for your application.

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AQ Matic/Aquamatic and Control Valves 1073109 - V427,3.00,ASTM,CI,NO/LS

$990.48$1,200.93

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073110 - V427,3.00,ASTM,CI,NO/LS/SAO

$886.59$1,074.96

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves V42J-3032-00000 3", Flanged x Flanged, 150 PSI, Cast Iron Cap, Red Primer, Y-Pattern, Diaphragm Valve

$915.11$1,109.54

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073120 - V427,3.00,ISO,CI,NO

$790.89$958.93

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073121 - V427,3.00,ISO,CI,NO,EO

$1,117.23$1,354.61

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073124 - V427,3.00,ISO,CI,NO/LS

$858.12$1,040.44

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073125 - V427,3.00,ISO,CI,NC

$823.17$998.07

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073129 - V428,4.00,ASTM,CI,CSTM

$1,658.49$2,010.87

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073136 - V428,4.00,ASTM,CI,NO,EO

$1,585.53$1,922.41

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073137 - V428,4.00,ASTM,CI,NO,EC

$1,585.53$1,922.41

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073139 - V428,4.00,ASTM,CI,NO

$1,332.16$1,615.20

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073140 - V428,4.00,ASTM,CI,NO

$1,359.01$1,647.76

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073144 - V428,4.00,ASTM,CI,NO

$1,457.81$1,767.55

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073149 - V428,4.00,ASTM,CI,NO/SAC,EO

$1,710.61$2,074.06

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073152 - V428,4.00,ASTM,CI,NO/LS,EO

$1,681.11$2,038.30

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073158 - V428,4.00,ASTM,CI,NC

$1,584.87$1,921.61

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073166 - V428,4.00,ISO,CI,NO,FL

$2,002.59$2,428.08

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073167 - V428,4.00,ISO,CI,NO

$1,305.30$1,582.64

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073171 - V428,4.00,ISO,CI,NO/LS

$1,400.88$1,698.53

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073172 - V428,4.00,ISO,CI,NC

$1,356.95$1,645.26

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073177 - V429,6.00,ASTM,CI,NO,EO

$5,099.36$6,182.84

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073178 - V429,6.00,ASTM,CI,NO,EC

$5,099.36$6,182.84

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073182 - V429,6.00,ASTM,CI,NO

$5,078.86$6,157.98

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1074077 - VALVE BODY,421,3/4,NPT,BRAS

$159.03$192.81

You save 18%
Should ship between 07 Nov and 11 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073109 - V427,3.00,ASTM,CI,NO/LS

$990.48$1,200.93

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073110 - V427,3.00,ASTM,CI,NO/LS/SAO

$886.59$1,074.96

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves V42J-3032-00000 3", Flanged x Flanged, 150 PSI, Cast Iron Cap, Red Primer, Y-Pattern, Diaphragm Valve

$915.11$1,109.54

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073120 - V427,3.00,ISO,CI,NO

$790.89$958.93

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073121 - V427,3.00,ISO,CI,NO,EO

$1,117.23$1,354.61

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073124 - V427,3.00,ISO,CI,NO/LS

$858.12$1,040.44

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073125 - V427,3.00,ISO,CI,NC

$823.17$998.07

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073129 - V428,4.00,ASTM,CI,CSTM

$1,658.49$2,010.87

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073136 - V428,4.00,ASTM,CI,NO,EO

$1,585.53$1,922.41

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073137 - V428,4.00,ASTM,CI,NO,EC

$1,585.53$1,922.41

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073139 - V428,4.00,ASTM,CI,NO

$1,332.16$1,615.20

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073140 - V428,4.00,ASTM,CI,NO

$1,359.01$1,647.76

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073144 - V428,4.00,ASTM,CI,NO

$1,457.81$1,767.55

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073149 - V428,4.00,ASTM,CI,NO/SAC,EO

$1,710.61$2,074.06

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073152 - V428,4.00,ASTM,CI,NO/LS,EO

$1,681.11$2,038.30

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073158 - V428,4.00,ASTM,CI,NC

$1,584.87$1,921.61

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073166 - V428,4.00,ISO,CI,NO,FL

$2,002.59$2,428.08

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073167 - V428,4.00,ISO,CI,NO

$1,305.30$1,582.64

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073171 - V428,4.00,ISO,CI,NO/LS

$1,400.88$1,698.53

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073172 - V428,4.00,ISO,CI,NC

$1,356.95$1,645.26

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073177 - V429,6.00,ASTM,CI,NO,EO

$5,099.36$6,182.84

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073178 - V429,6.00,ASTM,CI,NO,EC

$5,099.36$6,182.84

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1073182 - V429,6.00,ASTM,CI,NO

$5,078.86$6,157.98

You save 18%
Should ship between 18 Nov and 02 Dec

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1074077 - VALVE BODY,421,3/4,NPT,BRAS

$159.03$192.81

You save 18%
Should ship between 07 Nov and 11 Nov

Subject to factory lead times

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