DIN Lift Check Valve PN16-PN40 Flanged for Industrial Pipeline System

DIN Lift Check Valve is DIN standard vertical lift non-return valve designed for industrial pipeline anti-backflow control.
- Body material: high-quality cast steel / ductile iron
- End connection: DIN standard flanged connection
- Pressure rating: PN16‑PN40
- Manufactured strictly according to DIN industrial standards with high pipeline compatibility
- Precise vertical lift piston structure, accurate and sensitive opening and closing
- Tight sealing performance, effectively prevent medium reverse flow and leakage
- Full streamline flow channel, ultra-low flow resistance and small pressure loss
- Stable spring-assisted reset, suitable for horizontal and vertical installation
- Wear-resistant internal parts, long service life for continuous operation
- Rigid integral casting body, high pressure resistance and deformation resistance
- Simple structure, low failure rate and easy daily maintenance
- OEM support for size, pressure grade and standard customization

Description
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DIN Lift Check Valve

VALVEFAC DN80 Hydraulic Vertical Check Valve: Professional Backflow Prevention Solution for Industrial Water Systems

I. Product Overview

VALVEFAC DN80 hydraulic vertical check valves are constructed from WCB carbon steel, designed to GB/T 12235 and API 594 standards. The valve disc lifts along vertical guide rods to prevent backflow automatically. With a nominal diameter of DN80 (3″) and pressure classes PN16-PN160 (150LB-1500LB), it operates at -10℃~80℃, specialized for water pipelines in municipal water supply, industrial circulating water, and building fire protection.

II. Core Technical Parameters

1. Specifications & Operating Range
  - Nominal Diameter: DN80 (3″), compatible with DN80 flanged connections
  - Pressure Class: PN16 (1.6MPa), PN25 (2.5MPa), PN40 (4.0MPa)
  - Temperature Range: -10℃~80℃ (standard), optional -40℃~120℃ (high-temperature seal configuration)
  - Media Compatibility: Clean water, sewage, circulating water (solid content ≤0.5%)
2. Materials & Sealing System
  - Body/Bonnet: WCB carbon steel (tensile strength ≥485MPa), hot-dip galvanized surface (coating thickness ≥80μm)
  - Disc: WCB carbon steel with NBR rubber seal, Shore hardness 70±5
  - Stem: 2Cr13 stainless steel (HRC28-32), chrome plating ≥20μm
  - Connection: Flanged (RF face, GB/T 9113-2010/ASME B16.5)
3. Mechanical Performance
  - Opening Pressure: ≤0.02MPa (forward flow resistance)
  - Closure Response Time: ≤0.3s (triggered by backflow)