List of products by brand CSA

CSA – Technical profile of a water control valve, air valve and surge protection equipment manufacturer

CSA is an Italian manufacturer of hydraulic control equipment for water supply, wastewater, irrigation, desalination and industrial water systems. Its product range is focused on automatic control valves, air valves, pressure reducing valves, pressure sustaining valves, surge protection devices and special valves for water networks.

Main product areas include:

  • automatic control valves,
  • pressure reducing valves,
  • pressure sustaining valves,
  • pressure relief valves,
  • altitude control valves,
  • flow control valves,
  • pump control valves,
  • air release valves,
  • air / vacuum valves,
  • anti-surge and water hammer protection valves.

CSA products are mainly used in hydraulic networks where pressure, air management and transient control are critical. These valves are not simple manual isolation valves. Many of them operate hydraulically through pilot systems, pressure sensing lines or float-operated mechanisms.

Pressure reducing valves are used to control downstream pressure in water distribution networks. Pressure sustaining valves maintain minimum upstream pressure. Relief valves protect the network from excessive pressure. Pump control valves manage pump start-up and shutdown transients. Air valves evacuate air during filling, admit air during draining and release accumulated air during operation.

Selection requires hydraulic data:

  • maximum, minimum and normal flow,
  • upstream and downstream pressure,
  • pipe profile,
  • filling and draining conditions,
  • pump start / stop logic,
  • surge analysis where applicable,
  • water quality,
  • cavitation risk,
  • installation chamber layout,
  • maintenance access.

For water engineers, desalination engineers, irrigation designers and municipal utilities, CSA equipment must be selected as part of the hydraulic behaviour of the full network. Air management and surge protection should be reviewed during design, not added only after operational problems appear.

Automatic control valves - Pressure management - XLC 310/410-ND-P PN 16 | CSA - CSA

Automatic control valves - Pressure management - XLC 310/410-ND-P PN 16 | CSA

Automatic control valves - Pressure management - XLC 310/410-ND-P PN 16 | CSA
CSA
CSA XLC 310/410-ND-P PN16 The CSA XLC 310/410-ND-P is a hydraulically operated globe-type pressure reducing valve for water distribution networks, designed for dual downstream pressure setpoints. The ND-P variant integrates a Bluetooth programmer for remote adjustment and features an IP68-rated enclosure. Operation This valve maintains stable downstream...
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Automatic control valves - Pressure management - XLC 310/410-ND-H PN 16 | CSA - CSA

Automatic control valves - Pressure management - XLC 310/410-ND-H PN 16 | CSA

Automatic control valves - Pressure management - XLC 310/410-ND-H PN 16 | CSA
CSA
CSA XLC 310/410-ND-H PN16 The CSA XLC 310/410-ND-H is a hydraulically operated globe-type pressure reducing valve designed for potable water networks. It features two independently adjustable downstream pressure setpoints, with automatic switching based on flow rate within a configurable range. Transition between setpoints is not time-based but determined...
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Automatic control valves - Pressure management - XLC 353/453 PN 16/25 | CSA - CSA

Automatic control valves - Pressure management - XLC 353/453 PN 16/25 | CSA

Automatic control valves - Pressure management - XLC 353/453 PN 16/25 | CSA
CSA
CSA XLC 353/453 PN16/25 The CSA XLC 353/453 is a hydraulically actuated globe valve with stepwise opening/closing via solenoid valves. It is specified where remote position control is required, using a CSA controller, PLC, or SCADA/telemetry system. Operation The hydraulic circuit is actuated by solenoid valves, enabling controlled adjustment of the valve...
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Automatic control valves - Anti-surge - XLC 320/420-R PN 25 | CSA - CSA

Automatic control valves - Anti-surge - XLC 320/420-R PN 25 | CSA

Automatic control valves - Anti-surge - XLC 320/420-R PN 25 | CSA
CSA
CSA XLC 320/420-R PN 25 Pressure Relief Valve The CSA XLC 320/420-R is a hydraulically operated, globe-type automatic control valve designed for upstream pressure relief in water distribution networks. Installed on a bypass line, it opens when upstream pressure exceeds the pilot setpoint, discharging excess pressure to a designated return or drain point....
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Automatic control valves - Anti-surge - XLC 321/421 PN 16/25 | CSA - CSA

Automatic control valves - Anti-surge - XLC 321/421 PN 16/25 | CSA

Automatic control valves - Anti-surge - XLC 321/421 PN 16/25 | CSA
CSA
CSA XLC 321/421 PN 16/25 Anti-surge Pressure Relief Valve The CSA XLC 321/421 is a hydraulically operated pressure relief and surge anticipating valve, typically installed on a bypass line parallel to the main pipeline. It incorporates dual pilots, hydraulic accelerators, and flow control devices to respond to both overpressure events and rapid pressure...
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Automatic control valves - Anti-surge - XLC 390/490 PN16 | CSA - CSA

Automatic control valves - Anti-surge - XLC 390/490 PN16 | CSA

Automatic control valves - Anti-surge - XLC 390/490 PN16 | CSA
CSA
CSA XLC 390/490 PN16 Pump Control Valve The CSA XLC 390/490 is an active non-return (check) valve with automatic hydraulic control, designed for pump stations. It isolates the pump from the discharge line during start-up and shutdown, minimizing transient events, pressure surges, and water hammer in pressurized water systems. Operating Principle Unlike...
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Automatic control valves - Anti-surge - XLC 392/492 PN16 | CSA - CSA

Automatic control valves - Anti-surge - XLC 392/492 PN16 | CSA

Automatic control valves - Anti-surge - XLC 392/492 PN16 | CSA
CSA
CSA XLC 392/492 PN16 Pump Booster Control Valve The CSA XLC 392/492 is an active non-return valve with upstream pressure sustaining function. It is installed on the discharge side of pumps to enable controlled start-up and shutdown, minimizing transient events and hydraulic shock in pressurized water systems. Operation The valve hydraulically isolates the...
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Automatic control valves - Pump control - XLC 325/425 PN 16/25 | CSA - CSA

Automatic control valves - Pump control - XLC 325/425 PN 16/25 | CSA

Automatic control valves - Pump control - XLC 325/425 PN 16/25 | CSA
CSA
CSA XLC 325/425 PN16/25 Electrohydraulic Pressure Sustaining / Relief Valve The CSA XLC 325/425 is a hydraulically operated globe valve equipped with a pressure sustaining pilot and solenoid actuator. Installed in-line, it maintains upstream pressure at a preset value. When installed in a bypass, it functions as a pressure relief valve. The integrated...
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Automatic control valves - Pump control - XLC 390/490 PN 16 | CSA - CSA

Automatic control valves - Pump control - XLC 390/490 PN 16 | CSA

Automatic control valves - Pump control - XLC 390/490 PN 16 | CSA
CSA
CSA XLC 390/490 PN16 Pump Control Valve The CSA XLC 390/490 is an active check valve designed for pump discharge control in booster systems. It hydraulically isolates the pump from the network during start-up and shutdown, enabling controlled flow transitions and minimizing hydraulic surges and water hammer events. Technical Data Operating pressure:...
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Automatic control valves - Pump control - XLC 392/492 PN 16 | CSA - CSA

Automatic control valves - Pump control - XLC 392/492 PN 16 | CSA

Automatic control valves - Pump control - XLC 392/492 PN 16 | CSA
CSA
CSA XLC 392/492 PN16 Pump Control and Pressure Sustaining Valve The CSA XLC 392/492 is an active non-return valve with integrated upstream pressure sustaining function. It isolates the pump from the network during start-up and shutdown to minimize transient events and mitigate hydraulic shock. Designed for process water systems requiring controlled pump...
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Automatic control valves - Double chamber - XLC 300/400-DC-PR PN 16/25 | CSA - CSA

Automatic control valves - Double chamber - XLC 300/400-DC-PR PN 16/25 | CSA

Automatic control valves - Double chamber - XLC 300/400-DC-PR PN 16/25 | CSA
CSA
CSA XLC 300/400-DC-PR PN 16/25 Proportional Pressure Reducing Valve The CSA XLC 300/400-DC-PR is a hydraulically operated, double-chamber control valve designed for proportional pressure reduction. It reduces and stabilizes upstream pressure to a lower downstream value according to a preset pressure ratio, rather than a fixed setpoint. Functional Use The...
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Automatic control valves - Double chamber - XLC 310/410-DC PN 25 | CSA - CSA

Automatic control valves - Double chamber - XLC 310/410-DC PN 25 | CSA

Automatic control valves - Double chamber - XLC 310/410-DC PN 25 | CSA
CSA
CSA XLC 310/410-DC PN25 Dual Chamber Pressure Reducing Valve The CSA XLC 310/410-DC is a hydraulically operated globe-type control valve designed for downstream pressure reduction and stabilization at a fixed setpoint, independent of upstream pressure and flow fluctuations. Suitable for industrial water distribution and process control systems. Technical...
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Automatic control valves - Double chamber - XLC 320/420-S-DC PN 25 | CSA - CSA

Automatic control valves - Double chamber - XLC 320/420-S-DC PN 25 | CSA

Automatic control valves - Double chamber - XLC 320/420-S-DC PN 25 | CSA
CSA
CSA XLC 320/420-S-DC PN25 Upstream Pressure Sustaining Valve The CSA XLC 320/420-S-DC is a hydraulically actuated, double-chamber globe valve designed to maintain upstream pressure at a setpoint. Installed in-line, it modulates to throttle or open based on demand, ensuring upstream pressure does not fall below the configured value. Suitable for process...
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Automatic control valves - PN 40 - XLC 510/610 PN 40 | CSA - CSA

Automatic control valves - PN 40 - XLC 510/610 PN 40 | CSA

Automatic control valves - PN 40 - XLC 510/610 PN 40 | CSA
CSA
CSA XLC 510/610 PN40 Pressure Reducing Valve The CSA XLC 510/610 is a globe-type automatic control valve with piston actuation, designed for pressure reduction and downstream pressure stabilization in high-pressure water distribution systems. Regulation is achieved hydraulically via pilot control, without the need for electric actuators. Technical Data...
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Automatic control valves - PN 40 - XLC 520/620-S PN 40 | CSA - CSA

Automatic control valves - PN 40 - XLC 520/620-S PN 40 | CSA

Automatic control valves - PN 40 - XLC 520/620-S PN 40 | CSA
CSA
CSA XLC 520/620-S PN40 Upstream Pressure Sustaining Valve The CSA XLC 520/620-S is an automatic globe-type control valve, piston-operated, designed to maintain upstream pressure at an adjustable setpoint. The valve is installed in-line and opens only when the upstream pressure exceeds the pilot setpoint. Technical Data Nominal pressure: PN40 Minimum...
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Ball float valve type Athena | CSA - CSA

Ball float valve type Athena | CSA

Ball float valve type Athena | CSA
CSA
CSA ATHENA Mechanically Balanced Float Valve The CSA ATHENA is a mechanical float valve designed for automatic level control in tanks and reservoirs. Available in angle or globe pattern configurations, it operates without electrical supply and is unaffected by upstream pressure fluctuations. Suitable for process water and utility water systems where...
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Ball float valve type Athena 1 1/4" | CSA - CSA

Ball float valve type Athena 1 1/4" | CSA

Ball float valve type Athena 1 1/4" | CSA
CSA
CSA ATHENA 1 1/4" Float Valve The CSA ATHENA 1 1/4" is a mechanically actuated, angle-pattern float valve designed for automatic level control in small tanks and reservoirs. Operation is fully mechanical, requiring no electrical supply, and is unaffected by upstream pressure fluctuations. Technical Data Body: ductile cast iron GJS 450-10 Internal...
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Pressure reducing valve type VRCD | CSA - CSA

Pressure reducing valve type VRCD | CSA

Pressure reducing valve type VRCD | CSA
CSA
CSA VRCD The CSA VRCD is a direct-acting pressure reducing valve designed for treated water. It reduces high upstream pressure to a lower, stabilized downstream pressure without the need for an external pilot circuit. Technical Data Size range: DN50–DN150 Pressure classes: PN10 / PN16 / PN25 / PN40 Flanges: EN 1092-2 Design and testing: EN 1074...
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Pressure reducing valve type VRCD-XN | CSA - CSA

Pressure reducing valve type VRCD-XN | CSA

Pressure reducing valve type VRCD-XN | CSA
CSA
CSA VRCD-XN The CSA VRCD-XN is a direct-acting pressure reducing valve for treated water, designed with flanged connections DN50–DN150. It regulates downstream pressure without an external pilot circuit and is specified for installations requiring a compact pressure reduction station. Technical Data Pressure classes: PN10 / PN16 / PN25 / PN40 Flanges: EN...
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Pressure reducing valve type VRCD-M | CSA - CSA

Pressure reducing valve type VRCD-M | CSA

Pressure reducing valve type VRCD-M | CSA
CSA
CSA VRCD-M The CSA VRCD-M is a direct-acting diaphragm pressure reducing valve designed for treated water up to 60°C. It reduces upstream pressure to a stable downstream set point (1.5–6 bar), independent of inlet pressure and flow fluctuations. Technical Data Size range: DN50–DN150 Pressure class: PN10 / PN16 Flanges: EN 1092-2 Design, certification,...
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Pressure reducing valve type VRCD ST | CSA - CSA

Pressure reducing valve type VRCD ST | CSA

Pressure reducing valve type VRCD ST | CSA
CSA
CSA VRCD-ST The CSA VRCD-ST is a direct-acting pressure reducing valve with integrated stainless steel strainer, designed for treated water networks where both downstream pressure stabilization and protection of the regulating mechanism from suspended solids are required. The integrated strainer reduces installation footprint and minimizes the number of...
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Pressure reducing valve type VRCD-FF | CSA - CSA

Pressure reducing valve type VRCD-FF | CSA

Pressure reducing valve type VRCD-FF | CSA
CSA
CSA VRCD-FF The CSA VRCD-FF is a direct-acting pressure reducing valve for treated water, featuring flanged connections and integrated downstream pressure stabilization. It is used in pipelines requiring local pressure reduction without pilot circuits or external energy sources. Operation Pressure regulation is achieved mechanically via a...
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Pressure reducing valve type RDA | CSA - CSA

Pressure reducing valve type RDA | CSA

Pressure reducing valve type RDA | CSA
CSA
CSA RDA The CSA RDA is a direct-acting pressure reducing valve for water, featuring a welded carbon steel body and a ductile iron GJS 450-10 cover. It reduces and stabilizes downstream pressure to a set value, independent of flow fluctuations or upstream pressure variations. Technical Data Size range: DN50–DN150 Pressure ratings: PN10 / PN16 / PN25 /...
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Direct acting Pressure relief - Sustaining valve type VSM | CSA - CSA

Direct acting Pressure relief - Sustaining valve type VSM | CSA

Direct acting Pressure relief - Sustaining valve type VSM | CSA
CSA
CSA VSM The CSA VSM is a direct acting pressure relief and upstream pressure sustaining valve. It operates without an external pilot circuit; adjustment is achieved via a piston mechanism balanced against upstream pressure. Technical Data Sizes: DN50–DN150 Pressure classes: PN10, PN16, PN25, PN40 Flanges: EN 1092-2 Design/testing: EN 1074 Body/cover: GJS...
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