Valves - AQ Matic and Control Valves

Valves control, regulate, or direct the flow of fluids, such as water, gas, and other substances. They work by opening, closing, or obstructing passageways using flaps or other movable parts. There are three main t...

Categories from AQ Matic and Control Valves (3)
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.

Valve Repair Kits & Parts

Valve repair kits and parts are essential components used to maintain and repair valves in fluid control systems. These kits typically include seals, gaskets, o-rings, springs, and other necessary parts needed to restore or replace worn or damaged elements of a valve. Valve repair kits and parts enable the repair and refurbishment of valves, extending their lifespan and ensuring proper functioning. By using these kits, operators can quickly and cost-effectively address valve issues without requiring complete valve replacement. These kits are available for different types and sizes of valves, allowing for specific repairs tailored to the valve's design and requirements. Valve repair kits and parts are essential for industries such as manufacturing, petrochemicals, water treatment, and HVAC, where reliable valve performance is crucial.

Valve Accessories

Valve accessories are additional components that enhance the functionality and performance of valves in fluid control systems. These accessories are designed to provide other features, improve safety, or simplify maintenance of the valves. Valve accessories enhance the reliability, efficiency, and safety of valve operations, making them essential for various industries such as oil and gas, chemical processing, water treatment, and power generation.

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AQ Matic/Aquamatic and Control Valves 421-RF Internal Parts Repair Kit for V42B/V42C Cast Iron and Brass Valve

$80.83$98.01

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1070119 - KIT,424,INT,NO

$117.76$142.77

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 425-RF Internal Parts Repair Kit for V42F Cast Iron and Brass Valve

$199.58$241.98

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 426-RF Internal Parts Repair Kit for V42G/V42H Cast Iron and Brass Valve

$276.79$335.61

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1070122 - KIT,427,INT,NO

$375.19$454.90

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1070123 - KIT,428,INT,NO

$632.62$767.03

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 421-RG Internal Parts Repair Kit for V42B/V42C Cast Iron and Brass Valve

$97.81$118.58

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 424-RG Internal Parts Repair Kit for V42D/V42E Cast Iron and Brass Valve

$124.73$151.23

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1070131 - KIT,425,INT,NC

$213.55$258.92

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1070132 - KIT,426,INT,NC

$299.34$362.93

You save 18%
Typically ships within 3-5 days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1070133 - KIT,427,INT,NC

$423.09$512.98

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1070134 - KIT,428,INT,NC

$658.57$798.49

You save 18%
Typically ships within 3-5 days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 421-RF Internal Parts Repair Kit for V42B/V42C Cast Iron and Brass Valve

$80.83$98.01

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1070119 - KIT,424,INT,NO

$117.76$142.77

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 425-RF Internal Parts Repair Kit for V42F Cast Iron and Brass Valve

$199.58$241.98

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 426-RF Internal Parts Repair Kit for V42G/V42H Cast Iron and Brass Valve

$276.79$335.61

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1070122 - KIT,427,INT,NO

$375.19$454.90

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1070123 - KIT,428,INT,NO

$632.62$767.03

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 421-RG Internal Parts Repair Kit for V42B/V42C Cast Iron and Brass Valve

$97.81$118.58

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 424-RG Internal Parts Repair Kit for V42D/V42E Cast Iron and Brass Valve

$124.73$151.23

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1070131 - KIT,425,INT,NC

$213.55$258.92

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1070132 - KIT,426,INT,NC

$299.34$362.93

You save 18%
Typically ships within 3-5 days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1070133 - KIT,427,INT,NC

$423.09$512.98

You save 18%
Typically ships within 3-5 business days

Subject to factory lead times

AQ Matic/Aquamatic and Control Valves 1070134 - KIT,428,INT,NC

$658.57$798.49

You save 18%
Typically ships within 3-5 days

Subject to factory lead times