3 Inch Flanged Check Valve
Product Introduction
3 Inch Flanged Check Valve delivers automatic pipeline protection through its weighted disc mechanism. Forward flow smoothly lifts the disc; flow cessation triggers immediate closure via gravity and backpressure. Specially formulated ductile iron resists pitting in aggressive water-based media like wastewater and mild chemical solutions. The streamlined flow path reduces turbulence-induced erosion. Critical for fire suppression systems, irrigation controls, and processing plants where reverse flow could cause operational hazards. Horizontal mounting ensures reliable fail-safe performance without manual intervention.
Product Parameter
Product Name:3 Inch Flanged Check Valve
Main Material:Ductile Iron(Cast Iron)
Working Temperature:0℃ to 80℃(32℉ to 176℉ )
Size:DN50,DN65,DN80,DN100,DN125,DN150,DN200
Pressure Rating:Class 150LB
Working Medium:Water/Sewage
Color:Blue/Red
Applications:Used both vertically and horizontally;Used in one-way flow pipeline to prevent the water from back flow
Product Material
Body
Ductile Iron,QT450-10
01
Crossbar/Stem
Stainless Steel 304
02
Disc
Ductile Iron covered by EPDM
03
Seal
NBR
04
Bolt
Stainless Steel 304
05
Product Features
Swing Check Valves are primarily installed in horizontal pipelines but are also suitable for vertical piping systems. When deployed vertically, media flow must be upward from bottom to top. Additionally, these valves feature:
Streamlined Passage
Hydraulically efficient internal contours minimize fluid resistance and enhance flow capacity.
Damping Mechanism
Integrated disc retarders prevent sudden closure, mitigating water hammer effects and seat damage.
Sealing Performance
Reliable bubble-tight shutoff when closed. Optional spring or weighted assists enhance sealing integrity.
In summary, swing check valves offer straightforward construction, operational simplicity, and dependable sealing - making them universally applicable in fluid pipeline systems.
FAQ
Q1:What exactly does a swing check valve do?
A swing check valve is an automatic valve that allows fluid to flow in one direction only. It uses a swinging disc that opens when fluid moves forward and quickly closes when flow stops or tries to reverse. This simple but effective design protects equipment and prevents backflow in pipelines without requiring any manual operation or external power source.
Q2: Where are these valves most commonly used?
You'll find swing check valves widely used in water supply systems, heating and cooling circuits, industrial water lines, irrigation systems, and drainage applications. They are particularly well-suited for systems with relatively steady flow in larger diameter pipes. Their simple design makes them a reliable and economical choice for many general purpose applications.
Q3: How do I know if a swing check valve is right for my application?
Consider a swing check valve if your system has horizontal piping or vertical piping with upward flow, handles relatively clean liquids like water or air, operates at consistent flow rates without frequent starts/stops, and involves larger pipe sizes where their low flow resistance is advantageous. For specialized applications with chemicals, extreme temperatures, or frequent flow reversals, other valve types might be more appropriate.
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