Diaphragm Valves - AQ Matic and Control 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 1002935 - K521,1.00,PLS,CSTM
MPN:1002935
AQ Matic/Aquamatic and Control Valves 1002935 - K521,1.00,PLS,CSTM
AQ Matic/Aquamatic and Control Valves 1002935 - K521,1.00,PLS,CSTM
Sale Price:

$252.04$305.58

Regular Price: $305.58, you save $53.54 (18%)
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Typically ships within 2 weeks

Subject to factory lead times

AQ Matic 1017375 - K520,0.50,PLS,CSTM,W/END CONN
MPN:1017375
AQ Matic/Aquamatic and Control Valves 1017375 - K520,0.50,PLS,CSTM,W/END CONN
AQ Matic/Aquamatic and Control Valves 1017375 - K520,0.50,PLS,CSTM,W/END CONN
Sale Price:

$279.14$338.44

Regular Price: $338.44, you save $59.30 (18%)
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Typically ships within 2 weeks

Subject to factory lead times

AQ Matic 1070001 V42B-0000-00000 Diaphragm Valve
MPN:1070001
AQ Matic/Aquamatic and Control Valves V42B-0000-00000 3/4", FPT x FPT, 250 PSI, Cast Iron Cap, Red Primer, Y-Pattern, NO, Diaphragm Valve
AQ Matic/Aquamatic and Control Valves V42B-0000-00000 3/4", FPT x FPT, 250 PSI, Cast Iron Cap, Red Primer, Y-Pattern, NO, Diaphragm Valve
Sale Price:

$176.40$213.88

Regular Price: $213.88, you save $37.48 (18%)
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Low Stock (1) Ships within 1 business day
AQ Matic 1070002 V42B-0030-00000 Diaphragm Valve
MPN:1070002
AQ Matic/Aquamatic and Control Valvess V42B-0030-00000 3/4" NPT Normally Closed Diaphragm Valve
AQ Matic/Aquamatic and Control Valvess V42B-0030-00000 3/4" NPT Normally Closed Diaphragm Valve
Sale Price:

$192.62$233.54

Regular Price: $233.54, you save $40.92 (18%)
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Typically ships within 2-4 weeks

Subject to factory lead times

AQ Matic 1070003 V42B-0002-00000 Diaphragm Valve
MPN:1070003
AQ Matic/Aquamatic and Control Valvess V42B-0002-00000 3/4" NPT Normally Open, Spring Assist Closed Diaphragm Valve
AQ Matic/Aquamatic and Control Valvess V42B-0002-00000 3/4" NPT Normally Open, Spring Assist Closed Diaphragm Valve
Sale Price:

$230.99$280.06

Regular Price: $280.06, you save $49.07 (18%)
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Typically ships within 2-4 weeks

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AQ Matic 1070004 V42B-0001-00000 Spring Assist Open Diaphragm Valve
MPN:1070004
AQ Matic/Aquamatic and Control Valvess V42B-0001-00000 3/4" NPT Normally Open, Spring Assist Open Diaphragm Valve
AQ Matic/Aquamatic and Control Valvess V42B-0001-00000 3/4" NPT Normally Open, Spring Assist Open Diaphragm Valve
Sale Price:

$191.44$232.11

Regular Price: $232.11, you save $40.67 (18%)
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Typically ships within 2-4 weeks

Subject to factory lead times

AQ Matic 1070005 V42B-0032-00000 Diaphragm Valve
MPN:1070005
AQ Matic/Aquamatic and Control Valves V42B-0032-00000 3/4", FPT x FPT, 250 PSI, Cast Iron Cap, Red Primer, Y-Pattern, Diaphragm Valve
AQ Matic/Aquamatic and Control Valves V42B-0032-00000 3/4", FPT x FPT, 250 PSI, Cast Iron Cap, Red Primer, Y-Pattern, Diaphragm Valve
Sale Price:

$247.21$299.72

Regular Price: $299.72, you save $52.51 (18%)
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Typically ships within 2-4 weeks

Subject to factory lead times

AQ Matic 1070011 V42C-0000-00000 Diaphragm Valve
MPN:1070011
AQ Matic/Aquamatic and Control Valves V42C-0000-00000 1", FPT x FPT, 250 PSI, Cast Iron Cap, Red Primer, Y-Pattern, NO, Diaphragm Valve
AQ Matic/Aquamatic and Control Valves V42C-0000-00000 1", FPT x FPT, 250 PSI, Cast Iron Cap, Red Primer, Y-Pattern, NO, Diaphragm Valve
Sale Price:

$179.27$217.34

Regular Price: $217.34, you save $38.07 (18%)
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Typically ships within 2-4 weeks

Subject to factory lead times

AQ Matic 1070012 V42C-0030-00000 Diaphragm Valve
MPN:1070012
AQ Matic/Aquamatic and Control Valvess V42C-0030-00000 1” NPT Normally Closed Diaphragm Valve
AQ Matic/Aquamatic and Control Valvess V42C-0030-00000 1” NPT Normally Closed Diaphragm Valve
Sale Price:

$195.47$237.00

Regular Price: $237.00, you save $41.53 (18%)
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Typically ships within 2-4 weeks

Subject to factory lead times

AQ Matic 1002935 - K521,1.00,PLS,CSTM
MPN:1002935
AQ Matic/Aquamatic and Control Valves 1002935 - K521,1.00,PLS,CSTM
AQ Matic/Aquamatic and Control Valves 1002935 - K521,1.00,PLS,CSTM
Sale Price:

$252.04$305.58

Regular Price: $305.58, you save $53.54 (18%)
Loginto your account
Typically ships within 2 weeks

Subject to factory lead times

AQ Matic 1017375 - K520,0.50,PLS,CSTM,W/END CONN
MPN:1017375
AQ Matic/Aquamatic and Control Valves 1017375 - K520,0.50,PLS,CSTM,W/END CONN
AQ Matic/Aquamatic and Control Valves 1017375 - K520,0.50,PLS,CSTM,W/END CONN
Sale Price:

$279.14$338.44

Regular Price: $338.44, you save $59.30 (18%)
Loginto your account
Typically ships within 2 weeks

Subject to factory lead times

AQ Matic 1070001 V42B-0000-00000 Diaphragm Valve
MPN:1070001
AQ Matic/Aquamatic and Control Valves V42B-0000-00000 3/4", FPT x FPT, 250 PSI, Cast Iron Cap, Red Primer, Y-Pattern, NO, Diaphragm Valve
AQ Matic/Aquamatic and Control Valves V42B-0000-00000 3/4", FPT x FPT, 250 PSI, Cast Iron Cap, Red Primer, Y-Pattern, NO, Diaphragm Valve
Sale Price:

$176.40$213.88

Regular Price: $213.88, you save $37.48 (18%)
Loginto your account
Low Stock (1) Ships within 1 business day
AQ Matic 1070002 V42B-0030-00000 Diaphragm Valve
MPN:1070002
AQ Matic/Aquamatic and Control Valvess V42B-0030-00000 3/4" NPT Normally Closed Diaphragm Valve
AQ Matic/Aquamatic and Control Valvess V42B-0030-00000 3/4" NPT Normally Closed Diaphragm Valve
Sale Price:

$192.62$233.54

Regular Price: $233.54, you save $40.92 (18%)
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Typically ships within 2-4 weeks

Subject to factory lead times

AQ Matic 1070003 V42B-0002-00000 Diaphragm Valve
MPN:1070003
AQ Matic/Aquamatic and Control Valvess V42B-0002-00000 3/4" NPT Normally Open, Spring Assist Closed Diaphragm Valve
AQ Matic/Aquamatic and Control Valvess V42B-0002-00000 3/4" NPT Normally Open, Spring Assist Closed Diaphragm Valve
Sale Price:

$230.99$280.06

Regular Price: $280.06, you save $49.07 (18%)
Loginto your account
Typically ships within 2-4 weeks

Subject to factory lead times

AQ Matic 1070004 V42B-0001-00000 Spring Assist Open Diaphragm Valve
MPN:1070004
AQ Matic/Aquamatic and Control Valvess V42B-0001-00000 3/4" NPT Normally Open, Spring Assist Open Diaphragm Valve
AQ Matic/Aquamatic and Control Valvess V42B-0001-00000 3/4" NPT Normally Open, Spring Assist Open Diaphragm Valve
Sale Price:

$191.44$232.11

Regular Price: $232.11, you save $40.67 (18%)
Loginto your account
Typically ships within 2-4 weeks

Subject to factory lead times

AQ Matic 1070005 V42B-0032-00000 Diaphragm Valve
MPN:1070005
AQ Matic/Aquamatic and Control Valves V42B-0032-00000 3/4", FPT x FPT, 250 PSI, Cast Iron Cap, Red Primer, Y-Pattern, Diaphragm Valve
AQ Matic/Aquamatic and Control Valves V42B-0032-00000 3/4", FPT x FPT, 250 PSI, Cast Iron Cap, Red Primer, Y-Pattern, Diaphragm Valve
Sale Price:

$247.21$299.72

Regular Price: $299.72, you save $52.51 (18%)
Loginto your account
Typically ships within 2-4 weeks

Subject to factory lead times

AQ Matic 1070011 V42C-0000-00000 Diaphragm Valve
MPN:1070011
AQ Matic/Aquamatic and Control Valves V42C-0000-00000 1", FPT x FPT, 250 PSI, Cast Iron Cap, Red Primer, Y-Pattern, NO, Diaphragm Valve
AQ Matic/Aquamatic and Control Valves V42C-0000-00000 1", FPT x FPT, 250 PSI, Cast Iron Cap, Red Primer, Y-Pattern, NO, Diaphragm Valve
Sale Price:

$179.27$217.34

Regular Price: $217.34, you save $38.07 (18%)
Loginto your account
Typically ships within 2-4 weeks

Subject to factory lead times

AQ Matic 1070012 V42C-0030-00000 Diaphragm Valve
MPN:1070012
AQ Matic/Aquamatic and Control Valvess V42C-0030-00000 1” NPT Normally Closed Diaphragm Valve
AQ Matic/Aquamatic and Control Valvess V42C-0030-00000 1” NPT Normally Closed Diaphragm Valve
Sale Price:

$195.47$237.00

Regular Price: $237.00, you save $41.53 (18%)
Loginto your account
Typically ships within 2-4 weeks

Subject to factory lead times