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PTFE Fully Lined Butterfly Valve Lugged Split Body

PTFE Fully Lined Butterfly Valve Lugged Split Body

Valve Type Concentric Butterfly Valve, Fully Lined with FEP (Fluorinated Ethylene Propylene)
Body Design Split Body (Two-piece body, suitable for lug mounting, facilitates liner replacement)
Connection Type Lug Type (Tapped lug holes for dead-end service), conforming to ISO 5752 / GB/T 12238
Nominal Size DN50 ~ DN600 (2″ ~ 24″)
Pressure Rating PN10 / PN16 / Class 150LB

Description

Technical Data Sheet

Fully Lined Fluorine Butterfly Valve – Lug Type – Split Body – Manual Operation

Product Name: Wafer Type Fully Lined Fluorine Butterfly Valve (Split Body)

  1. General Information

Item

Specification

Valve Type

Concentric Butterfly Valve, Fully Lined with FEP (Fluorinated Ethylene Propylene)

Body Design

Split Body (Two-piece body, suitable for lug mounting, facilitates liner replacement)

Connection Type

Lug Type (Tapped lug holes for dead-end service), conforming to ISO 5752 / GB/T 12238

Nominal Size

DN50 ~ DN600 (2″ ~ 24″)

Pressure Rating

PN10 / PN16 / Class 150LB

Medium Suitability

Strong acids, strong alkalis, organic solvents, corrosive gases/liquids

Operating Temperature

-20°C to +150°C (FEP long-term ≤120°C; PTFE seat suitable for wide temp range)

Operation

Manual (Lever Handle or Gearbox, depending on torque requirement)

  1. Design Standards & Specifications

Item

Standard

Design & Manufacturing

GB/T 12238, API 609, MSS SP-67

Face-to-Face Dimensions

ISO 5752, GB/T 12221 (Series 13/14)

Flange Connection Dimensions

GB/T 17241.6, HG/T 20592, ASME B16.5 (Conforming to wafer/lug type)

Pressure Testing

GB/T 13927, API 598

Lining Quality

HG/T 4077, HG/T 4078

  1. Main Component Materials

Part Name

Material Specification

Remarks

Body

Ductile Iron (QT450-10) / Cast Steel (WCB)

Split body construction, internal/external coated with anti-corrosion paint

Lining

FEP (Fluorinated Ethylene Propylene / F46)

Thickness ≥3mm, fully encapsulates body passage and flange sealing faces

Disc

Ductile Iron / Cast Steel (FEP Lined) or Stainless Steel (FEP Overmolded)

Fully lined to prevent media contact with metal

Seat (Seal Ring)

PTFE (Polyetrafluoroethylene)

Pure PTFE or Reinforced PTFE; Replaceable, provides excellent chemical resistance and low friction

Stem / Shaft

Stainless Steel 2Cr13 / 304

Corrosion-resistant, pinned connection to disc

O-Ring / Packing

Viton (FPM) / PTFE

Stem sealing to prevent external leakage

Manual Operator

Cast Iron Lever / Aluminum Gearbox

Includes positioning/locking device

  1. Technical Parameters & Dimensions (Reference, PN10/PN16)

Nominal Size (DN)

Face-to-Face (L) mm

Flange Bore Dia. (Φd) mm

Bolt Circle Dia. (D1) mm

Disc Diameter (ΦD) mm

Operator Type

Approx. Weight (kg)

DN50

43

125

110

102

Lever

5

DN65

46

145

130

122

Lever

6.5

DN80

46

160

150

138

Lever

8

DN100

52

180

170

158

Lever

10

DN125

56

210

200

188

Lever

13

DN150

56

240

225

212

Lever

16

DN200

60

295

280

268

Gearbox

25

DN250

68

350

335

320

Gearbox

35

DN300

78

400

395

370

Gearbox

50

DN350

78

460

445

430

Gearbox

65

DN400

102

515

495

482

Gearbox

85

DN450

114

565

550

532

Gearbox

110

DN500

127

620

600

585

Gearbox

140

DN600

154

725

705

685

Gearbox

190

*Note: The above dimensions are based on the PN16 standard. Actual dimensions should conform to the manufacturer’s certified drawings. Lug connections comply with HG/T 20592-2009 (PN10/16).*

  1. Testing & Inspection

Test Item

Test Pressure (PN10)

Test Pressure (PN16)

Acceptance Criteria

Shell Test

1.5 × PN = 15 bar

1.5 × PN = 24 bar

No visible leakage, no structural damage

Seat Test (PTFE)

1.1 × PN = 11 bar

1.1 × PN = 17.6 bar

Bi-directional sealing, zero leakage (Class A per GB/T 13927)

Lining Spark Test

5~20 kV depending on thickness

No breakdown

 
  1. Product Features & Options
  • Split Body Design: The valve body consists of two halves bolted together, facilitating the molding process of the lining and allowing for easier liner replacement or maintenance.
  • Fully Lined Construction: All wetted metal surfaces (including body passage, flange sealing faces, and disc) are encapsulated with fluoroplastic, providing excellent corrosion resistance.
  • PTFE Seat: Provides low friction coefficient, excellent chemical resistance, and long service life. Suitable for most corrosive media.
  • Lug Type Connection: The valve body has threaded lugs, allowing it to be bolted between flanges using studs. This permits dead-end service and allows removal of one side of the pipeline without affecting the other.
  • Manual Operation:
    • DN50-DN200: Standard Lever Handle, allowing variable opening positions with a locating pin to lock in fully open/closed positions.
    • DN250-DN600: Standard Gearbox with self-locking function for easy operation, complete with a handwheel.
  • Optional Configurations:
    • Extended stem or extended lever handle (for insulated pipelines).
    • Anti-static device (conforming to ISO 5211).
    • Position indicator or limit switch.
  1. Installation & Maintenance Notes
  • Ensure the disc is in the closed position during installation to avoid forcing alignment.
  • Use corrosion-resistant gaskets (e.g., PTFE gaskets) for flange connections.
  • Do not force the handle when the valve is fully closed to prevent damage to the PTFE seat.
  • Regularly check the tightness of handle or gearbox mounting bolts and maintain lubrication.

Note: This data sheet provides general specifications. For specific projects, please refer to the manufacturer’s final drawings and parameters.

GUATANTEE:

SAVVY VALVES is committed to delivering exceptional product quality and worry-free after-sales service. Our valves are guaranteed to provide a minimum service life of 12 months, during which we will supply all necessary spare parts and detailed maintenance instructions free of charge. Within the warranty period, if any non-human-induced damage occurs, we will replace components at no cost and provide professional technical support. After the warranty expires, customers only need to pay for the cost of spare parts, while still benefiting from discounted maintenance services. Our goal is to help clients reduce operational costs and enhance production efficiency through reliable quality and comprehensive after-sales support. Whether for technical inquiries or maintenance needs, our expert team will respond promptly to ensure your valve system maintains optimal performance at all times.

 

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