Cast Iron Wafer Type Butterfly Valve in Handle /Worm Gear

July 29, 2025

**Product Information**
  • Model No.: D71X
  • Connection Form: Wafer
  • Seal Form: Force Sealed
  • Working Pressure: Low Pressure (Pn < 1.6MPa)
  • Seal Material: Soft Sealed
  • Application: Industrial Use, Water Treatment
  • Class: 150lb to 1500lb
  • Certifications: API 6D, CE, ISO9001
  • Delivery Time: 20–45 Days Depending on Quantity
  • Packaging: Standard Export Wooden Case
  • Origin: China
  • Drive Type: Manual
  • Structure: Center Sealing
  • Valve Stem: Standard
  • Operating Temperature: Normal (-40°C < T < 120°C)
  • Body Material: Casting
  • Size Range: 2" to 48"
  • Materials Available: Cast Iron, Ductile Iron, Stainless Steel
  • Application Fields: Metallurgy, Light Industry, Power Generation, Petrochemicals
  • Brand: NAIBANG
  • Standards: API598, API6d, ANSI, Bs, DIN, JIS
  • HS Code: 8481804090
Center Line Sealing Butterfly Valve

Main Features
The butterfly plate is designed with the turning center aligned with the valve body and sealing face. When closed, the outer edge of the butterfly plate compresses the synthetic rubber seat, causing it to deform elastically and create a sealing force that ensures tightness and reliable performance.

Main Technical Specifications
Design & Manufacturing: API 609, MSS SP-67, GB/T 12238
Face-to-Face Dimension: API609, GB/T 12224
Flange Connection Dimension: ASME B16.1, ASME B15.5, ASME B16.47, BS4504, GB/T 9113, JB/T 79
Testing & Inspection: API 598, JB/T 9092, GB/T 13927
Pressure-Temperature Rating: API 609, GB/T 12224

Product Range
Body Materials: Cast Iron, Ductile Iron
Nominal Diameter: 2" – 48" (DN15 – DN1200)
End Connections: Wafer, Lug, etc.
Pressure Range: Class 150 – 600 (PN16 – PN100)
Operating Temperature: -10°C – +120°C
Operation: Handle, Gear, Electric Actuator, etc.

PRODUCTS
Cast Iron Wafer Type Butterfly Valve in Handle /Worm Gear
WORKSHOP
Cast Iron Wafer Type Butterfly Valve in Handle /Worm Gear
INSPECTION
Cast Iron Wafer Type Butterfly Valve in Handle /Worm Gear

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With years of technical expertise and industry experience, we guarantee quality and reliability.

Naibang will be your best partner in China.

STANDARD MATERIAL LIST
No. Part Name Material
1 Bottom Cover A182 F6, F304, F304L, F316, F316L
2 Stud A193 B7, B7M, B8, B8M
3 Gasket Graphite
4 Body A216 WCB, A352 LCB, A351 CF8, CF8M, CF3, CF3M, Duplex
5 Stem A182 F6, F304, F304L, F316, F316L
6 Board A182 F6, F304, F304L, F316, F316L
7 Disc A216 WCB, A352 LCB, A351 CF8, CF8M, CF3, CF3M, Duplex
8 Pin A182 F6, F304, F304L, F316, F316L
9 Stud A193 B7, B7M, B8, B8M
10 Seal Ring SS304 + Graphite
11 Bushing SS304 + PTFE
12 Packing Graphite
13 Yoke Nut A194 2H, 2HM, 8, 8M
14 Yoke Stud A193 B7, B7M, B8, B8M
15 Yoke A216 WCB, A352 LCB, A351 CF8, CF8M, CF3, CF3M, Duplex

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