Sự miêu tả
TECHNICAL DATA SHEET
Monoflange Type Wafer Butterfly Valve
- BASIC VALVE INFORMATION
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Tham số
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Standard Configuration/Requirement
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Remarks/User Entry
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Loại van
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Monoflange Type Wafer Butterfly Valve
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Single integral flange at body center, both ends wafer type
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Valve Model
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D371X (Monoflange Type)
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Concentric butterfly valve with worm gear, monoflange construction
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Đường kính danh nghĩa (DN)
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DN50 ~ DN600 (or as required)
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Nominal Pressure (PN)
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PN10 / PN16 / PN25 (optional)
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PN16 recommended
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Connection Type
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Monoflange Wafer Type
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Integral flange at body center, both ends wafer connection
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Operation Type
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Worm Gear Operation
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Handwheel type with open/close indicator
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- DESIGN STANDARDS & SPECIFICATIONS
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Standard Name
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Code
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Nhận xét
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Design & Manufacturing Standard
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GB/T 12238
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Concentric rubber seated butterfly valve
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Face-to-Face Dimension Standard
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GB/T 12221 (Series 16)
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Short pattern
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Flange Connection Standard
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GB/T 9113 / HG/T 20592 / ASME B16.5
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Monoflange only
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Pressure-Temperature Rating
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GB/T 12224
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Test & Inspection Standard
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GB/T 13927
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Top Flange Standard
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ISO 5211
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For worm gear mounting
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- MAIN TECHNICAL PARAMETERS
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Tham số
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Unit
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Value/Requirement
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Nhận xét
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Service Medium
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Water, wastewater, seawater, air, oil, etc.
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Non-highly corrosive media
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Operating Temperature
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℃
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-10 ~ +80 (EPDM) / -10 ~ +120 (NBR)
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Determined by rubber material
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Rated Pressure
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MPa
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PN10 / PN16 / PN25
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As per selection
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Shell Test Pressure
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MPa
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1.5 x PN
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Seal Test Pressure
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MPa
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1.1 x PN
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Leakage Rate
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Zero leakage
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Soft seat characteristic
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Max. Flow Velocity
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m/s
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≤ 5 (liquid media)
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Monoflange Function
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Support / Fixing / Limiting / Anchoring
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Can bear pipeline load or serve as mounting bracket
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- MAIN COMPONENTS MATERIALS
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Part Name
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Specified Material
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Material Characteristics/Remarks
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Body (with monoflange)
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Ductile Iron (QT450-10 / GGG50)
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High strength, high toughness, monoflange cast integrally with body
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Đĩa
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Stainless Steel (304 / 1.4301)
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Solid stainless steel plate, corrosion resistant
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Thân cây
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Stainless Steel (2Cr13 or 304)
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Good strength and corrosion resistance
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Ghế
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Rubber: EPDM / NBR
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Please specify in remarks
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Seat Type
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Rubber lined seat (fully vulcanized)
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Rubber vulcanized directly onto body
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Bushing/Bearing
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Bronze or self-lubricating composite
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Reduce friction, prevent stem galling
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Worm Gear Housing
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Cast iron or die-cast aluminum alloy
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Enclosed type, IP65 protection
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Worm Gear/Worm Shaft
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Ductile iron / Steel (worm shaft)
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Wear resistant, smooth operation
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Handwheel
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Cast iron or Q235 steel
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With open/close direction indicator
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- STRUCTURAL CHARACTERISTICS & TECHNICAL REQUIREMENTS
- Connection Type: Monoflange wafer construction. The valve body has an integral cast flange at the center (monoflange) with bolt holes; both ends are wafer-type sealing faces without flanges.
- Installation Method:
- Valve is sandwiched between two pipeline flanges, tightened by through-bolts connecting both side flanges.
- Monoflange function: Can be used as support flange fixed to a bracket, as anchor flange to prevent axial movement, or for connection to auxiliary piping/support structure.
- Bolts pass through monoflange and pipeline flanges for overall tightening.
- Sealing Structure: Concentric soft seal design, disc interference fit with rubber seat achieving zero leakage. Seat adopts fully vulcanized process.
- Disc Material Advantage: Stainless steel disc, corrosion resistant, prevents sticking due to rust.
- Operation Type: Worm gear operation (standard for D371X model):
- Worm gear transmission, labor-saving operation
- Self-locking function, can be positioned at any angle
- Handwheel clockwise close, counterclockwise open, with position indicator
- Worm gear box IP65 protection rating
- Face-to-Face Dimension: According to GB/T 12221 Series 16 short pattern.
- Monoflange Load Capacity: The monoflange can bear certain pipeline weight or serve as anchoring point. Suitable for applications requiring intermediate pipe support or anti-vibration fixing.
- DIMENSIONS & CONNECTION SIZES (Unit: mm)
Note: Reference dimensions for PN16 rating. Monoflange located at body center.
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DN
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Face-to-Face L
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Monoflange OD D
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Monoflange PCD K
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No.-Bolt Holes
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Wafer End Seal Dia.
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Body Overall Width
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Worm Gear Model
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Weight (kg)
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50
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43
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165
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125
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4-Φ18
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102
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Approx. 60
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TBD
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8.5
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65
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46
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185
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145
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4-Φ18
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122
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Approx. 65
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TBD
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10.5
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80
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49
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200
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160
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8-Φ18
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138
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Approx. 70
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TBD
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13.0
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100
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56
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220
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180
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8-Φ18
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158
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Approx. 80
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TBD
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17.0
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125
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64
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250
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210
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8-Φ18
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188
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Approx. 90
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TBD
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22.0
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150
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70
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285
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240
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8-Φ22
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212
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Approx. 100
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TBD
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29.0
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200
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71
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340
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295
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8-Φ22
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268
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Approx. 110
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TBD
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40.0
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250
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76
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405
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355
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12-Φ26
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320
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Approx. 125
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TBD
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58.0
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300
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83
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460
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410
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12-Φ26
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370
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Approx. 140
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TBD
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75.0
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- OTHER REQUIREMENTS
- Coating:
- Body (ductile iron) exterior: Epoxy anti-rust paint, film thickness ≥150μm, color: blue (or as per user request).
- Monoflange sealing surface to be protected from painting.
- Stainless steel disc: No coating, natural metal finish.
- Protection & Storage:
- Valve ends protected with plastic caps.
- Worm gear box with waterproof packaging.
- Monoflange can be used as lifting point, ensure balanced lifting.
- Nameplate: Fixed on worm gear box or body, indicating: Manufacturer, Model D371X (Monoflange Type), Nominal Diameter, Nominal Pressure, Operating Temperature, Body/Disc/Seat Materials, Manufacturing No. and Date.
- Warranty: 12 months after commissioning or 18 months after delivery.
- Monoflange Load Capacity: This valve’s monoflange is designed for intermediate support and anchoring. Maximum allowable load depends on pipe size and operating conditions. Please consult manufacturer for specific load ratings.
- REMARKS
- Please select below:
- □ Seat Material: EPDM (Ethylene Propylene Rubber, temp. -10~+80℃, resistant to hot water, aging resistant)
- □ Seat Material: NBR (Nitrile Rubber, temp. -10~+120℃, good oil resistance)
- Monoflange bolt holes: Through holes (standard configuration)
- Matters not covered in this sheet shall be according to technical agreement signed by both parties and GB/T 12238 standard.
- If monoflange to be used as main anchoring point, please provide pipeline weight, support spacing, and any vibration/dynamic load parameters for strength verification.
This technical data sheet accurately describes the Monoflange Type Wafer Butterfly Valve:
- Integral monoflange at valve body center
- Both ends wafer type connection
- Model: D371X (Monoflange Type)
- Materials: Ductile Iron Body, Stainless Steel Disc, Rubber Seat
- Operation: Worm Gear
The monoflange provides intermediate support and anchoring capability, ideal for pipeline systems requiring additional stability or vibration control.
CAM KẾT:
SAVVY VALVES cam kết cung cấp chất lượng sản phẩm vượt trội và dịch vụ sau bán hàng không phải lo lắng. Van của chúng tôi được đảm bảo cung cấp tuổi thọ tối thiểu là 12 tháng, trong thời gian đó chúng tôi sẽ cung cấp tất cả các phụ tùng thay thế cần thiết và hướng dẫn bảo trì chi tiết miễn phí. Trong thời gian bảo hành, nếu xảy ra bất kỳ hư hỏng nào không phải do con người gây ra, chúng tôi sẽ thay thế các thành phần miễn phí và cung cấp hỗ trợ kỹ thuật chuyên nghiệp. Sau khi hết hạn bảo hành, khách hàng chỉ cần trả chi phí cho các phụ tùng thay thế, trong khi vẫn được hưởng lợi từ các dịch vụ bảo trì giảm giá. Mục tiêu của chúng tôi là giúp khách hàng giảm chi phí vận hành và nâng cao hiệu quả sản xuất thông qua chất lượng đáng tin cậy và hỗ trợ sau bán hàng toàn diện. Cho dù là yêu cầu kỹ thuật hay nhu cầu bảo trì, nhóm chuyên gia của chúng tôi sẽ phản hồi nhanh chóng để đảm bảo hệ thống van của bạn luôn duy trì hiệu suất tối ưu.