904L super austenitic stainless steel ball valve

Designed to withstand exceptionally aggressive corrosive environments, this 2-piece flanged ball valve is constructed from 904L super austenitic stainless steel (UNS N08904 / 1.4539). With high additions of chromium, nickel, and molybdenum, complemented by copper, 904L provides outstanding resistance to strong reducing acids, particularly sulfuric, phosphoric, and acetic acids, as well as chloride-induced pitting and crevice corrosion. The valve features an integrated ISO 5211 top flange, allowing direct mounting of pneumatic or electric actuators for reliable and streamlined process automation.

Technical Specifications

• Valve Type: 2-Piece Split Body Ball Valve

• Nominal Diameter: DN50 (2 Inch)

• Nominal Pressure: PN16 (Class 150 equivalent available)

• Body Material: Super Austenitic Stainless Steel 904L / UNS N08904 / EN 1.4539

• Ball Material: Solid Stainless Steel 904L (ASTM A182 F904L / A351 CK3MCuN)

• Connection Type: RF (Raised Face) Flanged Ends

• Flange Dimensions: EN 1092-1 Type 21 / DIN 2501 (ASME B16.5 interchangeable options)

• Actuator Mounting Pad: Integrated ISO 5211 Direct Mounting Pad

• Seat Material: Virgin PTFE / Reinforced PTFE (RPTFE) / Devlon

• Stem Packing: Multi-layer PTFE / Flexible Graphite V-Rings

• Port Design: Full Port / Full Bore Configuration

• Flow Coefficient (Cv): High Flow Capacity with Minimal Pressure Drop

• Face-to-Face Length: EN 558 Series 14 / DIN 3202 F4

• Stem Feature: Blow-out Proof Stem with Anti-Static Device

• Operation: Manual Lever with Locking Device (Bare shaft for automation optional)

• Wall Thickness Standard: ASME B16.34 / EN 12516

• Inspection & Testing: API 598 / EN 12266-1 Zero-leakage Pressure Test

• Casting Method: High-Quality Investment Precision Casting

• Surface Treatment: Acid Pickling and Passivation

• Primary Media: Sulfuric Acid, Phosphoric Acid, Sea Water, Brackish Water, Pulp and Paper Bleaching Liquors

• Quality Certifications: ISO 9001, CE PED 2014/68/EU, SIL 3 Compliant