Description
GESTRA CB 24S 26 26S PN 6-40 DN 50 to 300 Swing Check Valve
CB 24S, CB 26 and CB 26A are wafer-type swing check valves with short overall length to EN 558-1, series 96. The low weight of the equipment is beneficial for transportation, storage and installation.
Equipment type CB 24S is designed to be sandwiched between flanges according to the following standards: EN 1092 PN 6/10/16 ASME B 16.1 Class 125 FF and ASME B 16.5 Class 150 RF
The equipment has a soft seat made from NBR as standard.
Equipment types CB26 and CB26A are designed to be sandwiched between flanges according to the following standards: EN 1092 PN 6/10/16/25/40 ASME B 16.1 Class 125 FF and ASME B 16.5 Class 150/300 RF
The equipment has a soft seat made from EPDM as standard.
The equipment can be installed in horizontal or vertical pipes. If the equipment is mounted in a vertical pipe the flow must always be upwards.
Equipment specification
The equipment prevents the back flow in liquid and gas lines. The equipment is used for the following applications:
CB 24S for sea water and other saline fluids for which the equipment material is suitable.
CB 26 for industrial applications for fluids such as gases, liquids, steam and other non-corrosive media.
CB 26A for industrial applications for fluids such as gases, liquids, steam and corrosive/aggressive fluids for which the equipment material is suitable.
Function
The one-piece flap opens and closes as a function of the flow direction of the fluid in the pipe, thereby ensuring unidirectional flow. The equipment features non-slam spring-assisted closing.
Pressure & temperature ratings
Limiting conditions for CB 24S, DN 50 – 300, acc. to EN1092-1 (2013)
| T (temperature) [°C] | 20 | 901) | 1201) | 2001) | 2501) |
| p (pressure) [bar] | 16.0 | 16.0 | 16.0 | 16.0 | 15.6 |
| Pressure rating | PN 16 | ||||
| Min. temperature | – 200 °C | ||||
1) If temperatures exceed 90 °C use equipment without springs.
The specified minimum temperature is the lowest admissible service temperature at nominal pressure.
Limiting conditions for CB 26, acc. to DIN EN 12516-1 (2015)
| T (temperature) [°C] | 20 | 100 | 200 | 3001) | 3501) | 4001) | 4201) |
| DN 50 – 150 | |||||||
| p (pressure) [bar] | 40.0 | 37.1 | 33.3 | 27.6 | 25.9 | 23.8 | 17.1 |
| DN 200 – 300 | |||||||
| p (pressure) [bar] | 40.0 | 37.1 | 33.3 | 27.6 | – | – | – |
| Pressure rating | PN 40 | ||||||
| Min. temperature | – 10 °C | ||||||
1) If temperatures exceed 300 °C use equipment without springs.
The specified minimum temperature is the lowest admissible service temperature at nominal pressure.
Limiting conditions for CB 26A, DN 50 – 300, acc. to 12516-1 (2014)
| T (temperature) [°C] | 20 | 100 | 150 | 200 | 250 | 3001) | 3501) | 4001) | 4501) |
| p (pressure) [bar] | 40.0 | 40.0 | 38.6 | 35.8 | 34.2 | 32.5 | 30.8 | 29.1 | 28.0 |
| Pressure rating | PN 40 | ||||||||
| Min. temperature | – 10 °C | ||||||||
1) If temperatures exceed 300 °C use equipment without springs.
The specified minimum temperature is the lowest admissible service temperature at nominal pressure.
If the operating temperatures exceed 300 °C intercrystalline corrosion may occur. Do not subject the equipment to operating temperatures higher than 300 °C unless intercrystalline corrosion can be ruled out.
Limiting conditions for soft seats
| Type | Temperature range [°C] | Leak rate |
| EPDM | –40 to +150 | EN 12266-1, P12, leak rate A |
| FPM | –25 to +200 | EN 12266-1, P12, leak rate A |
| PTFE | –25 to +200 | EN 12266-1, P12, leak rate G |
| NBR | –30 to +110 | EN 12266-1, P12, leak rate A |
GESTRA CB 24S 26 26S PN 6-40 DN 50 to 300
Swing Check Valve
GESTRA: The Ultimate Solution for Industrial Steam & Fluid Control Systems
GESTRA CB 24S, CB 26, CB 26S – Premium Swing Check Valves for Industrial Applications
When system reliability is critical, choosing the right check valve is essential. GESTRA CB 24S, CB 26, and CB 26S Swing Check Valves are engineered to deliver maximum flow efficiency, long service life, and reliable backflow prevention in demanding industrial environments.
Designed for PN 6–40 pressure ratings and available in DN 50 to DN 300, these swing check valves are widely used in steam, condensate, water, and industrial fluid systems worldwide.
What Is a Swing Check Valve and Why GESTRA?
A swing check valve allows fluid to flow in one direction while automatically preventing reverse flow. Unlike spring-loaded designs, swing check valves provide low pressure drop and are ideal for large-diameter pipelines.
GESTRA is globally recognized for German engineering excellence, making the CB 24S, CB 26, and CB 26S series a preferred choice for engineers and plant operators.
Key Features of GESTRA CB 24S / CB 26 / CB 26S Swing Check Valves
1. Wide Pressure and Size Range
- Pressure Rating: PN 6, PN 10, PN 16, PN 25, PN 40
- Nominal Diameter: DN 50 to DN 300
This flexibility makes GESTRA swing check valves suitable for a broad range of industrial systems.
2. Low Pressure Loss Design
The optimized swing disc design ensures smooth flow and minimal pressure drop, improving overall system efficiency and reducing energy costs.
3. Robust and Durable Construction
Manufactured from high-quality materials, GESTRA CB series valves offer:
- High resistance to wear and corrosion
- Long operational lifespan
- Stable performance under fluctuating pressure and temperature
4. Reliable Backflow Protection
These swing check valves automatically close when flow reverses, protecting:
- Pumps
- Boilers
- Heat exchangers
- Piping systems
5. Easy Installation and Maintenance
The straightforward design allows for:
- Easy installation in horizontal pipelines
- Reduced maintenance requirements
- Lower total cost of ownership
Differences Between GESTRA CB 24S, CB 26, and CB 26S
| Model | Application Focus | Key Advantage |
|---|---|---|
| CB 24S | General industrial systems | Balanced performance & durability |
| CB 26 | Higher pressure systems | Enhanced pressure resistance |
| CB 26S | Steam & condensate applications | Optimized for thermal efficiency |
Each model is engineered to meet specific operational needs while maintaining GESTRA’s high-quality standards.
Typical Applications of GESTRA Swing Check Valves
GESTRA CB 24S, CB 26, and CB 26S are widely used in:
- Steam and condensate pipelines
- Industrial water supply systems
- Power plants
- Oil & gas facilities
- Chemical and petrochemical industries
- District heating systems
Their reliability makes them ideal for critical infrastructure and continuous-operation plants.
Benefits of Using GESTRA CB Series Swing Check Valves
Choosing GESTRA means gaining real operational advantages:
- Improved system safety with reliable backflow prevention
- Lower energy consumption due to reduced pressure loss
- Extended service life compared to standard check valves
- Reduced downtime and maintenance costs
These benefits translate into higher productivity and lower operational risk.
Technical Overview (Summary)
- Valve Type: Swing Check Valve
- Models: CB 24S, CB 26, CB 26S
- Pressure Rating: PN 6–40
- Nominal Diameter: DN 50–300
- Application Media: Steam, condensate, water, industrial fluids
- Brand: GESTRA (German Engineering)
Why Choose GESTRA Over Other Brands?
GESTRA is globally trusted because of:
- Proven performance in industrial steam systems
- High manufacturing standards
- Long-term reliability
- Strong international reputation
When system failure is not an option, GESTRA swing check valves deliver peace of mind.
Customer Experience & Industry Trust
“We use GESTRA CB series swing check valves in our steam distribution network. The pressure drop is minimal, and performance has been flawless for years.”
— Plant Maintenance Manager
“Reliable, durable, and easy to maintain. GESTRA valves are our standard choice.”
— Industrial Engineering Contractor
Frequently Asked Questions (FAQ)
Q1: What sizes are available for GESTRA CB swing check valves?
A: GESTRA CB 24S, CB 26, and CB 26S are available from DN 50 to DN 300.
Q2: What pressure ratings do these valves support?
A: They support PN 6 to PN 40, depending on the model.
Q3: Are these valves suitable for steam applications?
A: Yes, especially the CB 26S, which is optimized for steam and condensate systems.
Q4: What are the main advantages of swing check valves?
A: Low pressure drop, simple design, and high reliability in large pipelines.
Where to Buy Original GESTRA CB 24S / CB 26 / CB 26S Valves
To ensure authenticity and performance, always purchase original GESTRA swing check valves from authorized distributors. You will benefit from:
- Genuine products
- Technical support
- Fast delivery
- Competitive pricing
👉 Contact us today for pricing and technical consultation.
Conclusion – The Best Swing Check Valve for Industrial Reliability
If you are looking for a high-quality swing check valve with proven performance, GESTRA CB 24S, CB 26, and CB 26S PN 6–40 DN 50–300 are the ideal solution.
With German engineering, robust construction, and efficient flow design, these valves ensure long-term reliability and optimal system performance.
Choose GESTRA – engineered for safety, efficiency, and durability.
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PT Totalitas Teknik Indonesia
PT Totalitas Teknik Indonesia
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