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 4500616 - V427,3.00,NPT,CI,NC/SAC,BLUE

$763.48$925.69

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500617 - K531,1.00,PLS,NO/LS/SAC

$361.34$438.11

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500618 - K534,1.50,PLS,NO/LS/SAC,EO,24

$813.78$986.68

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500619 - K535,2.00,PLS,NO/SAC,EC,24V

$1,141.66$1,384.23

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500622 - V464,1.50,ASTM,SS,NC/LS,FKM

$935.56$1,134.33

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500623 - V465,2.00,FLGD,SS,NC/LS,FKM

$1,147.79$1,391.66

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500625 - K524,1.50,PLS,NO,DT 12

$292.17$354.24

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500627 - V425,2.00,NPT,CI,NO/PI/SAO,EP

$531.10$643.94

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500628 - K531,1.00,PLS,NO/LS/PI/SAC,D

$420.53$509.87

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500629 - K534,1.50,PLS,NO/LS/PI/SAC,D

$599.00$726.26

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500631 - V465,2.00,FLGD,SS,NO/LS,FKM

$1,102.35$1,336.57

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500632 - V465,2.00,ASTM,SS,NC,SAC,FKM

$1,167.50$1,415.56

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500633 - V421,0.75,BSPT,CI,NC/LS,

$257.64$312.37

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500634 - V421,1.00,BSP,CI,NC/LS,

$260.57$315.93

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500639 - V421,1.00,NPT,CI,NO/SAC

$306.98$372.20

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500640 - V426,2.00,NPT,CI,NC,DT 1

$604.82$733.32

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500646 - V424,1.25,BSP,CI,NO

$307.81$373.20

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500647 - V427,3.00,ASTM,CI,NO,BLUE

$893.87$1,083.79

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500650 - K5521,1.00,PLS,NO/LS/SC100

$661.83$802.44

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500656 - VAV7,3.0,ASTM,CI,NC

$1,100.38$1,334.17

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500660 - V424,1.50,NPT,CI,NC,BLUE

$263.55$319.54

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500661 - V425,2.00,NPT,CI,NC,

$479.52$581.40

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500662 - VAV1,0.75,NPT,CI,NO/SAC

$296.20$359.13

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500670 - V427,3.00,ASTM,CI,NO/SAO

$896.62$1,087.12

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500616 - V427,3.00,NPT,CI,NC/SAC,BLUE

$763.48$925.69

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500617 - K531,1.00,PLS,NO/LS/SAC

$361.34$438.11

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500618 - K534,1.50,PLS,NO/LS/SAC,EO,24

$813.78$986.68

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500619 - K535,2.00,PLS,NO/SAC,EC,24V

$1,141.66$1,384.23

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500622 - V464,1.50,ASTM,SS,NC/LS,FKM

$935.56$1,134.33

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500623 - V465,2.00,FLGD,SS,NC/LS,FKM

$1,147.79$1,391.66

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500625 - K524,1.50,PLS,NO,DT 12

$292.17$354.24

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500627 - V425,2.00,NPT,CI,NO/PI/SAO,EP

$531.10$643.94

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500628 - K531,1.00,PLS,NO/LS/PI/SAC,D

$420.53$509.87

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500629 - K534,1.50,PLS,NO/LS/PI/SAC,D

$599.00$726.26

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500631 - V465,2.00,FLGD,SS,NO/LS,FKM

$1,102.35$1,336.57

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500632 - V465,2.00,ASTM,SS,NC,SAC,FKM

$1,167.50$1,415.56

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500633 - V421,0.75,BSPT,CI,NC/LS,

$257.64$312.37

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500634 - V421,1.00,BSP,CI,NC/LS,

$260.57$315.93

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500639 - V421,1.00,NPT,CI,NO/SAC

$306.98$372.20

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500640 - V426,2.00,NPT,CI,NC,DT 1

$604.82$733.32

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500646 - V424,1.25,BSP,CI,NO

$307.81$373.20

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500647 - V427,3.00,ASTM,CI,NO,BLUE

$893.87$1,083.79

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500650 - K5521,1.00,PLS,NO/LS/SC100

$661.83$802.44

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500656 - VAV7,3.0,ASTM,CI,NC

$1,100.38$1,334.17

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500660 - V424,1.50,NPT,CI,NC,BLUE

$263.55$319.54

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500661 - V425,2.00,NPT,CI,NC,

$479.52$581.40

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500662 - VAV1,0.75,NPT,CI,NO/SAC

$296.20$359.13

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 4500670 - V427,3.00,ASTM,CI,NO/SAO

$896.62$1,087.12

You save 18%
Should ship between 11 Nov and 25 Nov

Subject to factory lead times

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