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 reducing - XLC 310/410 PN 25 | CSA - CSA

Automatic control valves - Pressure reducing - XLC 310/410 PN 25 | CSA

Automatic control valves - Pressure reducing - XLC 310/410 PN 25 | CSA
CSA
CSA XLC 310/410 PN25 Pressure Reducing Valve The CSA XLC 310/410 is an automatic, hydraulically operated pressure reducing valve for water distribution networks. It is engineered to maintain a constant downstream pressure regardless of upstream pressure or flow fluctuations. Operation is based on a pilot control system that continuously modulates the main...
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Automatic control valves - Pressure reducing - XLC 310/410-G PN 25 | CSA - CSA

Automatic control valves - Pressure reducing - XLC 310/410-G PN 25 | CSA

Automatic control valves - Pressure reducing - XLC 310/410-G PN 25 | CSA
CSA
CSA XLC 310/410-G PN25 The CSA XLC 310/410-G is a hydraulically operated globe-type pressure reducing valve, equipped with an additional downstream overpressure pilot. It maintains a constant downstream set pressure and limits pressure rise above the setpoint. Operation The pilot circuit regulates the main valve chamber based on downstream pressure. The...
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Automatic control valves - Pressure reducing - XLC 310/410-ND PN 16/25 | CSA - CSA

Automatic control valves - Pressure reducing - XLC 310/410-ND PN 16/25 | CSA

Automatic control valves - Pressure reducing - XLC 310/410-ND PN 16/25 | CSA
CSA
CSA XLC 310/410-ND PN16/25 The CSA XLC 310/410-ND is a hydraulically operated globe-type pressure reducing valve with two preset, adjustable downstream pressure set points. It is specified for water distribution networks requiring dual set points (typically day/night) to optimize pressure management and reduce water losses. Operation Switching between set...
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Automatic control valves - Pressure reducing - XLC 310/410-ND-P PN 16 | CSA - CSA

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

Automatic control valves - Pressure reducing - 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, designed for dual downstream pressure setpoints. It features a Bluetooth-configurable controller for remote parameter adjustment. Typical use is in water distribution networks requiring day/night pressure management. Operation The main valve...
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Automatic control valves - Pressure reducing - XLC 310/410-ND-H PN 16 | CSA - CSA

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

Automatic control valves - Pressure reducing - XLC 310/410-ND-H PN 16 | CSA
CSA
CSA XLC 310/410-ND-H PN16 The CSA XLC 310/410-ND-H is an automatic, hydraulically operated globe-type pressure reducing valve designed for water distribution networks. It features dual preset operating setpoints and enables pressure management based on network hydraulic conditions. This configuration is suitable for applications requiring dynamic...
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Automatic control valves - Pressure reducing - XLC 310/410-M PN 25 | CSA - CSA

Automatic control valves - Pressure reducing - XLC 310/410-M PN 25 | CSA

Automatic control valves - Pressure reducing - XLC 310/410-M PN 25 | CSA
CSA
CSA XLC 310/410-M PN25 The CSA XLC 310/410-M is a hydraulically operated globe-type pressure reducing valve, equipped with a CSA AMS electric actuator for remote or automated set point adjustment via input signal. It is specified where downstream pressure must be modulated remotely or integrated into process automation systems. Operation The pilot...
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Automatic control valves - Pressure reducing - XLC 310/410-T PN 16/25 | CSA - CSA

Automatic control valves - Pressure reducing - XLC 310/410-T PN 16/25 | CSA

Automatic control valves - Pressure reducing - XLC 310/410-T PN 16/25 | CSA
CSA
CSA XLC 310/410-T PN16/25 The CSA XLC 310/410-T is a hydraulically actuated downstream pressure reducing and stabilizing valve. It features a pressure setpoint that dynamically adjusts according to a programmed flow/pressure curve. Control is achieved via CSA controller or PLC, with SCADA integration and critical network sensor inputs supported....
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Automatic control valves - Pressure reducing - XLC 312/412 PN 25 | CSA - CSA

Automatic control valves - Pressure reducing - XLC 312/412 PN 25 | CSA

Automatic control valves - Pressure reducing - XLC 312/412 PN 25 | CSA
CSA
CSA XLC 312/412 PN25 The CSA XLC 312/412 is a hydraulically operated pressure reducing and sustaining valve. It maintains a constant downstream pressure while simultaneously ensuring a minimum upstream pressure is preserved within the network. Operation The pilot circuit controls the main valve based on two criteria: Downstream pressure stabilization...
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Automatic control valves - Pressure reducing - XLC 315/415 PN 16/25 | CSA - CSA

Automatic control valves - Pressure reducing - XLC 315/415 PN 16/25 | CSA

Automatic control valves - Pressure reducing - XLC 315/415 PN 16/25 | CSA
CSA
CSA XLC 315/415 PN16/25 The CSA XLC 315/415 is a hydraulically operated globe-type pressure reducing valve, equipped with a solenoid valve for remote open/close command. It maintains a constant downstream pressure and allows flow interruption or activation via external electrical signal. Operation A pilot regulates downstream pressure independently of...
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Automatic control valves - Pressure reducing - XLC 331/431 PN 25 | CSA - CSA

Automatic control valves - Pressure reducing - XLC 331/431 PN 25 | CSA

Automatic control valves - Pressure reducing - XLC 331/431 PN 25 | CSA
CSA
CSA XLC 331/431 PN25 The CSA XLC 331/431 is a hydraulically operated pressure reducing and flow limiting control valve. It maintains downstream pressure at a preset value while simultaneously restricting the maximum flow rate through the valve. Operation The pilot circuit monitors and controls two parameters: Downstream pressure Maximum flow rate If the...
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Automatic control valves - Pressure reducing - XLC 300/400-DC-PR PN 16/25 | CSA - CSA

Automatic control valves - Pressure reducing - XLC 300/400-DC-PR PN 16/25 | CSA

Automatic control valves - Pressure reducing - XLC 300/400-DC-PR PN 16/25 | CSA
CSA
CSA XLC 300/400-DC-PR PN16/25 Proportional Pressure Reducing Valve The CSA XLC 300/400-DC-PR is a hydraulically operated, double-chamber, proportional pressure reducing valve designed for potable water networks and industrial installations requiring downstream pressure stabilization via a preset reduction ratio. The double-chamber configuration enhances...
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Automatic control valves - Pressure reducing - XLC 310/410-DC PN 25 | CSA - CSA

Automatic control valves - Pressure reducing - XLC 310/410-DC PN 25 | CSA

Automatic control valves - Pressure reducing - XLC 310/410-DC PN 25 | CSA
CSA
CSA XLC 310/410-DC PN25 Hydraulically operated globe-type pressure reducing valve for downstream pressure stabilization, independent of upstream pressure or flow fluctuations. Designed for potable water networks, industrial water supply, and equipment protection lines against overpressure. Technical Description The XLC 310/410-DC utilizes a...
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Automatic control valves - Pressure reducing - XLC 510/610 PN 40 | CSA - CSA

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

Automatic control valves - Pressure reducing - XLC 510/610 PN 40 | CSA
CSA
CSA XLC 510/610 PN40 The CSA XLC 510/610 is a hydraulically operated, globe-type pressure reducing valve with piston actuator, rated for PN40. It is designed to reduce and stabilize downstream pressure, independent of upstream pressure or flow fluctuations. Suitable for industrial water networks requiring high pressure class. Technical Data Pressure...
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Automatic control valves - Pressure relief/sustaining - XLC 312/412 PN 25 | CSA - CSA

Automatic control valves - Pressure relief/sustaining - XLC 312/412 PN 25 | CSA

Automatic control valves - Pressure relief/sustaining - XLC 312/412 PN 25 | CSA
CSA
CSA XLC 312/412 PN25 Pressure Sustaining and Relief Valve The CSA XLC 312/412 is a hydraulically operated, globe-type automatic valve designed for water distribution systems. It maintains a minimum upstream pressure while regulating downstream pressure to a preset value. The valve’s operation remains stable regardless of flow or demand fluctuations in the...
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Automatic control valves - Pressure relief/sustaining - XLC 320/420-R PN 25 | CSA - CSA

Automatic control valves - Pressure relief/sustaining - XLC 320/420-R PN 25 | CSA

Automatic control valves - Pressure relief/sustaining - XLC 320/420-R PN 25 | CSA
CSA
CSA XLC 320/420-R PN25 The CSA XLC 320/420-R is a hydraulically operated upstream pressure relief valve, globe type, designed for installation on a bypass line parallel to the main pipeline. The valve opens when upstream pressure exceeds the pilot setpoint, discharging flow to limit overpressure in the network. Operation Used for overpressure control in...
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Automatic control valves - Pressure relief/sustaining - XLC 320/420-S PN 25 | CSA - CSA

Automatic control valves - Pressure relief/sustaining - XLC 320/420-S PN 25 | CSA

Automatic control valves - Pressure relief/sustaining - XLC 320/420-S PN 25 | CSA
CSA
CSA XLC 320/420-S PN25 The CSA XLC 320/420-S is a hydraulically actuated, globe-type upstream pressure sustaining valve for in-line installation. It maintains upstream pressure at a preset value, regardless of downstream demand fluctuations. Operation A pilot valve modulates the main valve opening to prevent upstream pressure from dropping below the...
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Automatic control valves - Pressure relief/sustaining - XLC 321/421 PN 16/25 | CSA - CSA

Automatic control valves - Pressure relief/sustaining - XLC 321/421 PN 16/25 | CSA

Automatic control valves - Pressure relief/sustaining - XLC 321/421 PN 16/25 | CSA
CSA
CSA XLC 321/421 PN16/25 The CSA XLC 321/421 is a hydraulically operated upstream pressure relief valve with surge anticipating function. It is installed on a bypass line parallel to the main pipeline to protect against hydraulic shock, particularly during sudden pump stoppage or power failure. Operating Principle The control circuit utilizes two pilot...
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Automatic control valves - Pressure relief/sustaining - XLC 324/424 PN 16 | CSA - CSA

Automatic control valves - Pressure relief/sustaining - XLC 324/424 PN 16 | CSA

Automatic control valves - Pressure relief/sustaining - XLC 324/424 PN 16 | CSA
CSA
CSA XLC 324/424 PN16 The CSA XLC 324/424 is a hydraulically operated globe valve designed for upstream pressure sustaining and minimum/maximum tank level control. It is installed in series on tank inlet lines, restricting flow when upstream pressure drops below the setpoint. The valve is suitable for water supply systems requiring controlled filling...
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Automatic control valves - Pressure relief/sustaining - XLC 325/425 PN 16/25 | CSA - CSA

Automatic control valves - Pressure relief/sustaining - XLC 325/425 PN 16/25 | CSA

Automatic control valves - Pressure relief/sustaining - XLC 325/425 PN 16/25 | CSA
CSA
CSA XLC 325/425 PN16/25 The CSA XLC 325/425 is a hydraulically operated upstream pressure sustaining/relief valve with solenoid override. In series installation, it functions as a sustaining valve; in bypass, it operates as a relief valve. The solenoid enables full open/close actuation via external signal or controller. Operation The pilot maintains...
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Automatic control valves - Pressure relief/sustaining - XLC 326/426 PN 16 | CSA - CSA

Automatic control valves - Pressure relief/sustaining - XLC 326/426 PN 16 | CSA

Automatic control valves - Pressure relief/sustaining - XLC 326/426 PN 16 | CSA
CSA
CSA XLC 326/426 PN16 The CSA XLC 326/426 is a hydraulically operated upstream pressure sustaining valve with proportional tank level control. It maintains a minimum upstream pressure and, via the MCP stainless steel level pilot, regulates a constant tank level regardless of upstream pressure fluctuations. Operation The valve opens proportionally to tank...
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Automatic control valves - Pressure relief/sustaining - XLC 392/492 PN16 | CSA - CSA

Automatic control valves - Pressure relief/sustaining - XLC 392/492 PN16 | CSA

Automatic control valves - Pressure relief/sustaining - XLC 392/492 PN16 | CSA
CSA
CSA XLC 392/492 PN16 The CSA XLC 392/492 is a hydraulically operated pump control valve with upstream pressure sustaining function. It acts as an active check valve, isolating the pump from the network during start-up and shutdown to mitigate hydraulic surge (water hammer) phenomena. Operation This valve enables controlled pump start/stop cycles,...
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Automatic control valves - Pressure relief/sustaining - XLC 395/495 PN 16/25 | CSA - CSA

Automatic control valves - Pressure relief/sustaining - XLC 395/495 PN 16/25 | CSA

Automatic control valves - Pressure relief/sustaining - XLC 395/495 PN 16/25 | CSA
CSA
CSA XLC 395/495 PN16/25 The CSA XLC 395/495 is a hydraulically operated differential pressure sustaining valve. It maintains a preset minimum differential pressure between two network points, regardless of demand fluctuations. This function is critical for hydraulic balance in complex water distribution or process circuits. Operation The pilot system...
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Automatic control valves - Pressure relief/sustaining - XLC 320/420-S-DC PN 25 | CSA - CSA

Automatic control valves - Pressure relief/sustaining - XLC 320/420-S-DC PN 25 | CSA

Automatic control valves - Pressure relief/sustaining - XLC 320/420-S-DC PN 25 | CSA
CSA
CSA XLC 320/420-S-DC PN25 The CSA XLC 320/420-S-DC is a hydraulically actuated, double-chamber upstream pressure sustaining valve for in-line installation in water distribution systems. It maintains a preset upstream pressure by modulating downstream flow when inlet pressure drops below the setpoint. Technical Specifications Type: Globe pattern, double...
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Automatic control valves - Pressure relief/sustaining - XLC 520/620-S PN40 | CSA - CSA

Automatic control valves - Pressure relief/sustaining - XLC 520/620-S PN40 | CSA

Automatic control valves - Pressure relief/sustaining - XLC 520/620-S PN40 | CSA
CSA
CSA XLC 520/620-S PN40 The CSA XLC 520/620-S is a hydraulically operated upstream pressure sustaining valve, globe type, piston actuated, with a nominal pressure rating of PN40. It is installed in-line to maintain upstream pressure at a set value, independent of downstream demand fluctuations. Technical Data Pressure class: PN40 Available sizes:...
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