Flange Bottom Foot Valve: Prevent Backflow + High-Seal Performance, Safety Guarantee For Piping Systems
Flange Bottom Foot Valve: Prevent Backflow + High-Seal Performance, Safety Guarantee For Piping Systems suppliers
Flange Bottom Foot Valve: Prevent Backflow + High-Seal Performance, Safety Guarantee For Piping Systems factory
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Flange Bottom Foot Valve: Prevent Backflow + High-Seal Performance, Safety Guarantee For Piping Systems manufacturers
Flange Bottom Foot Valve: Prevent Backflow + High-Seal Performance, Safety Guarantee For Piping Systems
This Flange Bottom Foot Valve is a critical component for piping systems, integrating check and filtration functions. It connects via flanges and fits pipes from DN50 to DN300. Widely used in pump inlet systems, it prevents medium backflow and traps impurities, ensuring stable operation of pipes and pumps.
Description
Ca-Fire Protection Co.,Ltd is one of the most credible manufacturers and suppliers of flange bottom foot valve: prevent backflow + high-seal performance, safety guarantee for piping systems in China. Welcome to wholesale custom made fire equipment products at competitive price from our factory. Contact us for more cheap products.
Products Description
CA-FIRE Flange Type Fire Bottom Valve
Structure: It features an integrated design of "flange interface + check valve core + metal strainer". The top flange meets national standards (compatible with DN50–DN300 pipes). The bottom metal strainer intercepts solid impurities, while the precision-sealed valve core ensures reliable check performance.
Parameters:
Nominal Diameter (DN): 50, 65, 80, 100, 150, 200, 250, 300
Dimensions (per the table): E.g., DN50 has L=174mm, flange outer diameter D=165mm; DN300 has L=600mm, D=460mm (see the parameter table for details).
Pressure Rating: PN1.0–PN4.0, suitable for most industrial piping pressures.
Materials: Optional carbon steel, stainless steel, etc., to match corrosion requirements of different media.
Applications & Working Principle
It is ideal for municipal water supply, sewage treatment, chemical processes, agricultural irrigation, and industrial pump sets. Especially suitable for inlet pipes of centrifugal pumps and self-priming pumps, it prevents backflow and protects equipment from impurity wear.
Working Principle
When the pump starts, medium pressure opens the valve core for normal flow.
When the pump stops, the valve core closes automatically under medium gravity and reverse pressure, stopping backflow.
The bottom strainer traps solid impurities, preventing them from entering the pump and causing wear or blockage.
Safety & Compliance Tips
Installation Safety:
Ensure pipe and bottom valve flange sizes match (refer to D, D1 in the parameter table).
Clean the sealing surface before installation; tighten bolts evenly. Never disassemble/assemble under pressure.
Maintenance Compliance:
Inspect the strainer for blockages every 1–3 months (shorten for media with heavy impurities).
When servicing, close upstream/downstream valves and drain the medium first.
Media Compatibility: Choose materials based on medium corrosion (e.g., stainless steel for weak acids, carbon steel for neutral water).
How to Choose Flange Type Fire Bottom Valve
Dual Functionality: Combines check and filtration to reduce system failures and improve reliability.
Full Specification Range: DN50–DN300 coverage with GB-standard flanges for strong installation compatibility.
Durability: High-quality materials and precision sealing ensure wear and corrosion resistance, lowering long-term maintenance costs.
FAQ
Q: What media can this valve handle?A: It works with clean water, sewage, neutral oils, and some weak acids/alkalis. Material selection determines compatibility (stainless steel is more versatile).
Q: Is there an immersion depth requirement during installation?A: It must be fully submerged, with the strainer at least 10–15cm above the tank bottom to avoid impurity buildup.
Q: How to know if maintenance is needed?A: Signs include loud pump startup noise, low flow, or obvious backflow after pump shutdown. Inspect the strainer or valve core.
Q: How many bolts are needed for different DN sizes?A: Refer to the "n-φd" column in the parameter table. E.g., DN50 uses 4 bolts, DN300 uses 24 bolts.
Our address
NO.8, YUANFENG ROAD, MEIYUAN VILLAGE, KANGMEI TOWN, NANAN CITY, QUANZHOU CITY, FUJIAN CHINA
+86 18160950625
miki@ca-fire.com
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