PTFE Fully Lined Butterfly Valve Lugged Split Body

PTFE Fully Lined Butterfly Valve Lugged Split Body

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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)
Model No.: D341F46-10/16 (Example, PN10/PN16)

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)

2. 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

3. 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

4. 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).*

5. 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

6. 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.

7. 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.

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