DST12 Crepine
Devinsan offers specialized intake solutions engineered for reliable debris pre-filtration and continuous pump protection in submerged suction environments. Designed for maximum flow and longevity, these DST12 Crepine units combine robust screening with a low-resistance profile to meet the critical demands of modern raw water management.
Production Standard
Nominal Dimension (DN)
Nominal Pressure (PN)
Operating Temperature
Connection
Coating
Testing
DN 40 – DN 500
PN 6-PN 10-PN 16-PN 25-PN 40
-30° / +200°
EN 1092-2 ISO7005-2 Flanged
Electrostatic Powder Epoxy
EN 12266-1
Application Areas
The DST12 Crepine is widely used across diverse industrial and commercial sectors, delivering reliable flow control and long‑lasting performance.
1. Water and Wastewater Systems
2. Chemical Industry
3. Food and Beverage Industry
4. Pharmaceutical Industry
5. Oil and Gas Industry
6. HVAC (Heating, Ventilation, Air Conditioning) Systems
In these applications, this DST12 Crepine ensures precise fluid control, maintains excellent sealing integrity, and supports efficient, safe operation even under demanding conditions.
The DST12 Crepine is an indispensable pipeline fitting specifically engineered to be installed at the terminal end of a pump’s suction line, functioning as a primary filtration barrier. Designed to meet the stringent demands of modern infrastructure, this specialized strainer ensures the sustained operational health of pumps and downstream components by preventing the ingress of large solids, rocks, and debris.
At the core of the DST12 Crepine is its high-surface-area cylindrical screen housing. This design provides an expansive filtration area relative to its size, allowing for high flow intake with minimal velocity and exceptionally low pressure loss when clean. The screen material and mesh size are designed to effectively capture foreign objects that pose a direct threat of damage or clogging to pump impellers, ensuring smooth fluid extraction.
Manufactured from high-strength, corrosion-resistant materials and built with a rugged body, the DST12 Crepine is designed to withstand continuous submergence and challenging environments such as rivers, lakes, or large sumps. Its simple pipe connection allows for secure integration directly onto the suction pipe. The robust construction and open-ended design ensure longevity, while its passive function eliminates the maintenance costs associated with complex mechanical systems.
The DST12 Crepine is ideally suited for applications in portable pumping systems, irrigation intake, raw water extraction from reservoirs, and any application where the suction line is exposed to large or continuous volumes of solids and sediment. Its robust design and effective screening capability make it a preferred choice for engineers seeking a high-integrity, standards-compliant solution for long-term pump protection and sustainable water abstraction.
In summary, the DST12 Crepine offers an optimal combination of comprehensive debris interception, high flow capacity, and robust durability. With its large screening area, simple yet rugged construction, and focus on pump safety, this unit stands as a trusted solution for modern fluid intake and equipment protection requirements worldwide.
1. General Information
The DST12 Crepine is designed for submerged use at the inlet of a pump suction line, requiring secure connection and positioning well below the minimum fluid level. Proper installation is essential to guarantee safe operation, long service life, and efficient water abstraction.
2. Safety Precautions
Installation must be performed by qualified personnel only.
Ensure strict compliance with all local safety regulations and standards concerning submerged equipment handling and safety protocols for working over or near water bodies.
Wear appropriate personal protective equipment (PPE), including flotation devices if necessary.
Confirm that the pump is electrically isolated and the suction line is fully depressurized before beginning installation of the DST12 Crepine.
3. Pre-Installation Checklist
Inspect the DST12 Crepine for any visible damage during transport or storage, paying particular attention to the screen mesh integrity and connection end alignment.
Check that the crepine type, size, and connection method (e.g., flange, thread) match the suction pipe requirements.
Verify that the strainer interior and screen are clean and free from debris.
Confirm that the suction pipe end is clean and aligned correctly for connection to the DST12 Crepine. Ensure the final placement location provides sufficient clearance beneath the fluid surface and above the bottom to prevent air intake (vortexing) or excessive sediment ingestion.
4. Installation Procedure
Positioning: Connect the DST12 Crepine securely to the end of the suction pipe using appropriate joining methods (bolting or welding, as per type). The strainer must be submerged deep enough to prevent air intake (vortexing) during maximum pump flow.
Lower the pipe assembly into the fluid body, ensuring the strainer rests securely or is suspended appropriately to avoid contact with the bottom sediment layer.
Ensure the screen surface is not obstructed and the intake area is clear.
5. Post-Installation
Slowly start the pump and prime the system, checking for smooth operation and confirming that the suction pressure remains stable. Monitor the system during the first few cycles for any unusual noise indicating obstruction. Record the installation details, depth of submergence, and operational notes for documentation purposes.
Proper maintenance extends the service life of the DST12 Crepine and ensures reliable pre-filtration and maximum pump protection. Follow the guidelines below to maximize the longevity of this essential unit.
1. Routine Operation
Visually inspect the DST12 Crepine and its immediate intake area regularly (e.g., monthly) for any signs of screen blockage, heavy sediment buildup, or physical damage to the screen housing. Monitor the pump performance; a sudden increase in required pump energy or decrease in flow indicates potential strainer blockage.
2. Inspection Schedule
Monthly, check the area surrounding the DST12 Crepine for external obstruction or accumulation of large debris against the screen surface.
Quarterly, check the overall structural integrity of the submerged strainer assembly and the condition of the screen mesh.
Annually, perform a detailed inspection by raising the strainer assembly to check the screen material for fatigue, tears, or excessive pitting.
3. Lubrication
The DST12 Crepine is a passive filtration device and contains no internal moving parts. No lubrication is required for this unit.
4. Seal and Gasket Replacement
If the DST12 Crepine is flanged, replace the flange gasket immediately upon reinstallation if external leakage is detected after lowering the pipe. The screen itself should be replaced if damage (holes, tears) is found that would allow harmful debris to pass through. Always isolate the pump and drain the suction line thoroughly before attempting any maintenance work requiring raising the assembly.
5. Cleaning
Periodically lift the DST12 Crepine assembly out of the fluid for physical cleaning (high-pressure washing or brushing) to remove bio-fouling, silt, and collected debris from the screen surface. Keep the external pipe connection clean to prevent corrosion that could weaken the joint.
6. Storage and Spare Parts
Store spare parts (gaskets, replacement screen sections) in a dry, clean, and cool environment, away from direct sunlight and temperature extremes. Maintain a detailed record of all inspections, screen cleaning cycles, and repairs performed on the DST12 Crepine unit.
We prioritize quality at every stage of production to deliver durable, safe, and efficient products. Our continuous improvement and strict quality controls keep us at the forefront of the industry.
Our certifications prove our commitment to excellence and compliance with international standards, ensuring the safety and reliability of our products worldwide.
We continuously invest in innovation and quality to expand our certifications and meet evolving industry needs.
Frequently Asked Questions about the DST12?
What are the main advantages of this valve?
The DST12 Crepine offers superior protection for the pump by filtering large debris and ensuring maximum suction efficiency due to its large-area screening design and minimal head loss when clean.
Why should I choose this product?
This valve delivers outstanding performance in both sealing and durability, making it a dependable choice for demanding applications. Its straightforward design facilitates easy installation, offering flexibility during system design. With a wide range of material options, it meets the needs of various infrastructure projects, from municipal water networks to industrial facilities.
Is the DST12 Crepine suitable for installation in a borehole or well?
No. The DST12 Crepine is designed for wide, open water bodies (sumps, rivers, reservoirs) where the debris is coarse. Narrow wells typically require slimline filters or other specialized intake devices.
How does the size of the DST12 Crepine prevent vortex formation?
The large intake surface area of the DST12 Crepine reduces the fluid velocity at the intake point. By maintaining a low velocity, the strainer helps mitigate the formation of vortices that could draw air into the suction line and potentially damage the pump.
How frequently should the DST12 Crepine be inspected?
The inspection frequency depends heavily on the cleanliness of the water source. In highly contaminated sources, the DST12 Crepine may require monthly inspection, whereas clean water sources may only require annual checks.
Contact Devinsan
Reach out to our team for inquiries, quotes, and technical assistance