904L Three Eccentric Hard Seal Stainless Steel Butterfly Valve UNS N08904

D343Y-904L Three Eccentric Hard Sealed Flange Butterfly Valve

This product adopts worm gear operation, flange connection, and triple eccentric hard seal structure. The main material field is 904L, corresponding to UNS, N08904/EN, 1.4539, with a current diameter of DN50-DN500 and pressure of PN16/Class150.

What corrosion conditions is 904L material suitable for?

904L belongs to high alloy austenitic stainless steel, with high nickel, chromium, molybdenum content and corrosion resistance. However, the specific applicability of the medium should still be judged based on concentration, temperature, chloride ions, redox conditions, and project material specifications.

Triple eccentric hard seal

The structural code 3 corresponds to three eccentricities. The actual sealing material, leakage level, bidirectional sealing ability, and allowable temperature should be based on the product drawings and test data.

For more hard seal products, please refer toSelection of hard sealed butterfly valve。

Frequently Asked Questions

Is 904L necessarily suitable for all strong acids?

No, the compatibility of the material should be checked based on the type of acid, concentration, temperature, and impurities.

Is 904L equal to 316L?

No, the two belong to different material grades.

Is the three eccentric hard seal necessarily completely free of wear?

Absolute conclusions cannot be used, actual wear depends on the structure, operating conditions, and number of opening and closing cycles.