Unlike traditional swing check valves, our split-body sandwich design allows for quick inline maintenance without breaking the pipeline. The internal surface is polished to Ra ≤ 0.8μm, eliminating product adhesion and bacterial growth spots.
Why Engineers Choose VTY Flange Check Valve:
Material Integrity: Forged 316L (1.4404) contact parts with full EN 10204 3.1 traceability.
Compact Installation: Directly clamps between DIN/ISO or Inch flanges—no welding required, reducing installation time by 60%.
CIP/SIP Compatible: Withstands 150°C sterilization temperatures; EPDM seals conform to FDA 177.2600.
Zero Backflow: Opening pressure as low as 0.08 bar, ensuring immediate response even in low-viscosity fluids like purified water or thin milk.
Available Configurations: DN25 to DN100 | Weld Ends (DIN 11850 Series 2 / Inch) | Threaded | Clamp | Flange.
Note: All specifications are verified using VTY's in-house metrology lab equipped with 3D CMM, surface roughness testers, and hardness testers. Calibration traceable to international standards.
|
Material grade |
Product contact parts |
304L/316L (1.4307/1.4404) Forged |
|
Non-product contact parts |
304 (1.4301) |
|
|
Provide EN 10304 3.1B Certificate |
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|
Seal Material |
Standard |
EPDM |
|
Option |
FPM, Silicone, PTFE, NBR |
|
|
All seal materials comply with FDA 177.2600 |
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|
Temperature Range |
Running working temperature |
-20~+135℃ (EPDM) |
|
Sterilization temperature |
150 ℃ (max 20min) |
|
|
Pressure |
Opening Pressure |
≈0.08 bar |
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Max working pressure |
10 bar |
|
|
Roughness |
Internal Surface |
Ra≤0.8μm |
|
External Surface |
Ra≤1.6μm |
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|
Connection |
Welded end: DIN 11850 series 2 |
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|
Welded end: INCH pipe standard |
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Connection method: weld, thread, clamp and flange |
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Recognized by industry authorities for innovation, quality, and reliability
A: The EPDM seal supports continuous operation from -20°C to +135°C. For sterilization (SIP), it withstands 150°C for up to 20 minutes. For higher temperature applications, we offer FPM (Viton) and PTFE seal options—please contact our technical team for selection guidance.
A: The VTY-FCV uses a spring-assisted poppet mechanism that closes 40% faster than conventional swing check valves, significantly reducing the slam and pressure surge (water hammer) that can damage downstream equipment. The guided disc design also ensures stable operation even under variable flow conditions.
A: We provide EN 10204 3.1 certification as standard for all product-contact materials, with full chemical composition and mechanical property traceability. EN 10204 3.2 certification (third-party inspected) is available upon request for pharmaceutical and high-criticality applications.
A: The VTY-FCV can be installed in both horizontal and vertical (with upward flow) orientations. For vertical installations with downward flow, we recommend our spring-assist configuration to ensure reliable closure. Please specify your installation orientation when placing your order so we can pre-set the spring tension accordingly.
A: Standard lead time is 15-20 working days for sizes DN25-DN100. We also maintain stock inventory for popular configurations (DN25/DN40/DN50, 316L, EPDM seals) for urgent requirements. For custom materials (Hastelloy, Monel) or special finishes, please allow 25-30 working days. Contact our sales team for current stock availability.
A: 316L contains molybdenum (2-3%), which provides superior resistance to pitting and crevice corrosion from food acids (citric, lactic, acetic), salt brines, and aggressive CIP chemicals (chlorinated caustics). The "L" grade also has lower carbon content, reducing the risk of sensitization during welding—critical for maintaining the sanitary integrity of your welded connections. All VTY flange check valves use forged 316L for maximum structural integrity and corrosion resistance.
| Size | A | B | L | ||||
|---|---|---|---|---|---|---|---|
| 25 | 31 | 26 | 92 | ||||
| 32 | 37 | 32 | 92 | ||||
| 40 | 43 | 38 | 92 | ||||
| 50 | 55 | 50 | 112 | ||||
| 65 | 72 | 66 | 122 | ||||
| 80 | 87 | 81 | 147 | ||||
| 100 | 106 | 100 | 152 |
| Size | A¹ | A² | T | L | |||
|---|---|---|---|---|---|---|---|
| 25 | 28 | 29 | 1.5 | 92 | |||
| 32 | 34 | 35 | 1.5 | 92 | |||
| 40 | 40 | 41 | 1.5 | 92 | |||
| 50 | 52 | 53 | 1.5 | 112 | |||
| 65 | 70 | 70 | 2.0 | 122 | |||
| 80 | 85 | 85 | 2.0 | 147 | |||
| 100 | 104 | 104 | 2.0 | 152 | |||
Address
No.729, Road 3, Binhai Industrial Zone, Wenzhou, Zhejiang, China
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