Ductile Iron Butterfly Valves

Short Description:

The ductile iron butterfly valve provides reliable and cost‑effective fluid control solutions for water and general industrial applications. Featuring compact construction and quarter‑turn operation, ...

Product Name: Manual Operated Ductile Iron Butterfly Valves
Valve Category: Ductile Iron Valves
Brand: Yiluoke
Technical Data: DN15-DN2000
Made In: China
Supplier: Xiamen Yiluoke Import and Export Trading Co., Ltd

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Product Detail

Actuated Ductile Iron Butterfly Valves

• Durable Construction: Manufactured from high‑strength ductile iron with anti‑corrosion epoxy coating for long‑term service performance.

• Efficient Flow Control: Designed for tight shut‑off and suitable for on‑off operation.

• Diverse Operation Options: Can be equipped with gear operating handle.

• Pressure & Size Range: Rated pressure up to PN16, sizes from DN50 to DN300.

• Medium Compatibility: Optional EPDM or NBR seat for water and partial industrial liquids.

• Easy Installation & Maintenance: Compact valve body is easier to transport and install compared with heavier valves.

Standards & Certifications

Design & Manufacturing: ASME B16.34; ASME VIII; API 609; DIN; GB; JIS

Leakage Rate: API 598 (bi‑directional zero leakage)

Side Flange Standard: ANSI 125LB/150LB; ASME; AS‑D/E; BS; DIN; EN PN6/PN10/PN16; GB; GOST; HG/T; JIS 5K/10K

Top Flange (Actuator Mounting): ISO 5211; GB 90°

Face‑to‑Face Dimension: ISO 5752; MSS SP‑68; ASME B16.10; EN 558‑1; API 609

Test Standard: API 598; EN 12266‑1; ISO 5208; BS 6755‑1

Technical Parameters

Valve Specifications
Connection Type	Double Flange / U‑flange
Actuator	Worm‑gear / Bare shaft (for automation)
Size Range	2" ~ 80" (DN50～DN2000)
Nominal Pressure	PN10, PN16, PN25 / ANSI Class 125, 150 / JIS 10K, 16K
Test Standard	Body: 1.5 × rated pressure Seat: 1.1 × rated pressure (comply with API 598 / EN 12266‑1)
Applicable Medium	Drinking water, waste water, seawater, HVAC fluids, compressed air and low‑viscosity oil
Working Temperature	-20°C to +150°C (-4°F to +302°F) *Depends on seat elastomer selection

Valve Materials
Body	Ductile Iron: GGG40, GGG50, EN‑GJS‑400‑15, EN‑GJS‑500‑7, ASTM A536 65‑45‑12 Grey Cast Iron(Optional): GG25, EN‑GJL‑250
Disc	Ductile Iron: Nickel‑plated / Nylon coating Stainless Steel: CF8 (304), CF8M (316), Duplex 2205 Aluminum Bronze: C95400, C95800 (for seawater service)
Stem / Shaft	Stainless Steel: SS410, SS416, SS420 (Standard) High‑grade Stainless Steel: SS304, SS316, 17‑4PH, Duplex 2205
Seat (Liner)	Water / General Service: EPDM, WRAS / ACS certified EPDM Oil / Air: NBR (Buna‑N) High‑temp / Chemical Service: PTFE, FKM (VITON™)
Coating	• Type: Fusion Bonded Epoxy (FBE) powder coating • Coverage: Internal & external • Standard Thickness: Min. 250 µm