CS 50- 80 - 91 Safety Valves
The CS 50, CS 80, and CS 91 safety valves from Carraro, feature a compact design for various applications. CS 50 and CS 80 have open spring housings for air, steam, and non-hazardous gases, while CS 91 has a closed housing for liquids and hazardous vapors. Available with cap, hood, or handle.
Benefits for you:
For sales or commercial inquiries please contact us at marine@insatech.com.
The CS safety valves are designed for precision and reliability, ensuring a high level of safety for steam boilers, pressure vessels, and industrial or marine installations.
A key advantage is their ability to operate with minimal overpressure, allowing for multiple valves on the same system to have different set pressures while remaining within the 10% overpressure limit permitted by boiler regulations. This ensures that only the necessary valves open during operation, enhancing efficiency.
The CS 50 - 80 – 91 safety valves from the CS series has several benefits. See some of them listed below:
The CS safety valves play a critical role in various sectors ensuring precise flow and pressure management in a range of applications such as:
The various industries which the valves are suitable includes, but is not excluded to:
The small blowdown of CS safety valves allows the working pressure to stay close to the set pressure, minimizing fluid discharge while maintaining stable operating conditions.
This design helps to re-establish normal working conditions quickly, reducing waste and improving system performance.
The CS series is approved by the Italian standards institute ISPESL, further guaranteeing their quality and safety.
The CS valves series has several parts, we have listed them for the CS 50 with simple og composed lever execution below (and see the drawing):
1 - Valve body
2 - Seat
3 - Adjusting ring (*)
4 - Disc (*)
5 - Guide
6 - Piston
7 - Lower washer
8 - Spring
9 - Spindle (*)
10 - Upper washer
11 - Yoke
12 - Adjusting screw
12 - Lever pin
14 - Spindle nut
15 - Cap
16 - Lever
17 - Screw (only DN80/ 100; Stud (over: DN80/ 100)
18 - Nut (over: DN80/ 100)
19 - Top lever
21- Disc (*)
22 - Disc gasket (*)
23 - Disc screw (*)
24 - Gasket ring (*)
(*) Is the recommended spare parts.
The CS Series safety valves regulate pressure for both compressible fluids and liquids.
For compressible fluids, the valve opens quickly when pressure exceeds the set point, with fluid discharging through the nozzle at critical velocity. This "pop action" allows for rapid pressure release with minimal overpressure. Once the pressure drops below the set point, the valve closes swiftly.
For liquids, the valve operates more gradually, with larger overpressure and blowdown values, ensuring smooth pressure control throughout the process.
| Technical Specifications | |||||||||||||||||||
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| Function | On / off (POP action) |
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| Size |
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| Connection | Flanges (ANSI or PN) |
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| Pressure step | Max ANSI 900, PN 16 - 160 |
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| Materials | Cast iron, steel, stainless steel, or alloy |
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| Trim material | Stainless steel (standard) |
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| Set pressure | From 1 to 130 bar(g) |
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| Inlet pressure | Max. Depending on orifice (opening) |
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| Temperature |
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If you are looking for some specific material, please write to us. Then we will try to find it for you, and send it as soon as possible.
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