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

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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)

General Information

Item	사양
밸브 유형	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
공칭 크기	DN50 ~ DN600 (2″ ~ 24″)
압력 등급	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)
작업	Manual (Lever Handle or Gearbox, depending on torque requirement)

Design Standards & Specifications

Item	기준
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

Main Component Materials

Part Name	Material Specification	비고
몸	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
디스크	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

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)
디엔50	43	125	110	102	지렛대	5
DN65	46	145	130	122	지렛대	6.5
DN80	46	160	150	138	지렛대	8
DN100	52	180	170	158	지렛대	10
DN125	56	210	200	188	지렛대	13
DN150	56	240	225	212	지렛대	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).*

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

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: 기준 Lever Handle, allowing variable opening positions with a locating pin to lock in fully open/closed positions.
DN250-DN600: 기준 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.

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.

보증:

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