Stainless Steel Single Disc Check Valve H74X 1.0 - 2.5MPa CF8m SUS304 DN50-DN300

• Customization: Available
• Media: Water
• Temperature: Ordinary Temperature
• Model NO.: DN50-DN300
• Material: Stainless Steel
• Connection Form: Wafer Type
• Structure: Swing
• Pressure: Ordinary Temperature
• Function: Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe
• Sealing Form: Rubber Sealing
• Flow Direction: Unidirection
• Standard: ANSI
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Transport Package: Carton, Plywood Case
• Specification: DN50-DN300
• Trademark: YAOFA
• Origin: China
• HS Code: 8481804090
• Production Capacity: 50000piece /Year

Product Description

Company Profile

Specification

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Model Interpretation
The meaning of each letter in the H74X model:

H: Valve type is Check Valve;
7: Connection mode is Wafer Type (installed by clamping between pipeline flanges);
4: Structure is Swing Type Single Disc (the disc rotates around a shaft to open/close);
X: Sealing surface material is Rubber, which is commonly used for water media and features excellent sealing and corrosion resistance.

Structure and Working Principle
1. Core Structure
Valve Body: Made of stainless steel (e.g., 304, 316), with strong corrosion resistance, suitable for water and mildly corrosive media;
Disc: Single-disc design, rotating around a pin in the valve body. It opens by medium pressure and closes by its own weight and reverse medium pressure;
Sealing Surface: The contact surface between the disc and seat is covered with a rubber layer to achieve zero-leakage sealing, reducing flow resistance and noise;
Wafer Connection: The valve body has no flanges at both ends, clamped by bolts between two pipeline flanges, featuring a compact structure and space-saving installation.
2. Working Principle
Forward Flow: When the medium flows in the direction of the arrow on the valve body, the pressure pushes the disc to rotate and open around the pin, with low resistance and smooth flow;
Reverse Cut-off: When the medium flows backward, the disc quickly closes under its own weight and reverse pressure, and the rubber sealing surface tightly fits the seat to prevent backflow and water hammer impact.

Technical Specifications

After Sales Service

Standard Warranty: 12 months or 2,000 operating hours (whichever comes first).
Global Support: 24/7 technical assistance and spare parts supply.
Training: On-site or remote operation/maintenance training.

FAQ

Q: What’s the lead time for orders?
A: Standard models ship in 15–30 days; customized units require 30–45 days.

Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.

Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.