Cartridge Seat Wafer Concentric Butterfly Valve

• Product Type: Concentric Butterfly Valve, Wafer Type
• Seat Design: Cartridge Seat (Replaceable, Metal-Reinforced Resilient Seat)
• Operation: Lever, Gearbox, Pneumatic Actuator, or Electric Actuator (ISO 5211 mounting pad)
• Design Standard: EN 593 / API 609 / ISO 10631 / MSS SP-67
• Face-to-Face: EN 558 Series 20 / API 609 Table 1
• Flange Drilling: EN 1092-2 PN10/16, ASME B16.5 Class 150, JIS B2220
• Test Standard: EN 12266-1 / API 598 / ISO 5208
• Temperature Range: -40°C to +180°C (depending on seat material and pressure)
• Pressure Rating: PN10/16, Class 150

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설명

Technical Data Sheet

Cartridge Seat Wafer Concentric Butterfly Valve

General Description

Product Type: Concentric Butterfly Valve, Wafer Type
좌석 디자인: Cartridge Seat (Replaceable, Metal-Reinforced Resilient Seat)
작업: Lever, Gearbox, Pneumatic Actuator, or Electric Actuator (ISO 5211 mounting pad)
설계 표준: EN 593 / API 609 / ISO 10631 / MSS SP-67
대면: EN 558 Series 20 / API 609 Table 1
Flange Drilling: EN 1092-2 PN10/16, ASME B16.5 Class 150, JIS B2220
Test Standard: EN 12266-1 / API 598 / ISO 5208
온도 범위: -40°C to +180°C (depending on seat material and pressure)
압력 등급: PN10/16, Class 150

애플리케이션

Suitable Media: Water, air, oils, gases, weak corrosive liquids, vacuum services
Typical Industries: Water treatment, HVAC, chemical processing, marine, food and beverage, pulp and paper
Installation: Must be clamped between two pipe flanges (wafer design does not have threaded inserts for dead-end service)

Technical Parameters (Typical Range)

매개변수	사양
공칭 직경(DN)	DN50 – DN600 (larger sizes available up to DN2000)
압력 등급	PN10 / PN16 / Class 150
Shell Test Pressure	1.5 x PN (e.g., 24 bar for PN16)
Seat Test Pressure	1.1 x PN (e.g., 17.6 bar for PN16)
Leakage Rate	Zero Leakage (Bubble Tight) – ISO 5208 Rate A / ANSI Class VI
Operating Temperature	-40°C to +180°C (dependent on seat elastomer)
Vacuum Service	Suitable for full industrial vacuum
Flow Characteristic	Approximately linear, low pressure drop
Direction of Flow	Bi-directional
Mounting Flange	ISO 5211 top flange for direct actuator mounting

Materials of Construction

요소	Material Options	노트
몸	Ductile Iron (GGG40/GGG50) / Cast Iron / Carbon Steel (WCB) / Stainless Steel (CF8/CF8M)	Wafer design – shorter body length, centering lugs for alignment
디스크	Stainless Steel (CF8/CF8M/316) / Ductile Iron with Nylon Coating / Bronze	Streamlined design for high Cv
줄기	Stainless Steel (416/304/316/420) / 17-4PH	One-piece thru-shaft design, anti-blowout
Seat (Cartridge Type)	Composite Construction:	Modular design with metal reinforcement ring
	– Sealing Material: EPDM / NBR / Viton / PTFE	Encapsulated rubber or PTFE
	– Support Ring: Stainless Steel / Phenolic	Prevents extrusion and deformation
Bushings / Bearings	PTFE / Bronze / Reinforced PTFE	Low friction, absorbs side thrust
Stem Seals	O-Rings (EPDM/NBR) + Dirt Wiper	Multiple sealing, prevents external contamination

Cartridge Seat Features & Benefits

그만큼 Cartridge Seat design is a key feature of this valve, offering significant advantages over conventional lined or booted seats.

Feature	Benefit
Modular / Pre-Assembled Design	Seat is a self-contained unit (sealing material bonded to a rigid metal/phenolic ring).
Field Replaceable	Seat can be replaced without removing the valve body from the pipeline. Only the disc and stem need to be removed.
Metal-Reinforced Construction	Stainless steel or rigid backing ring prevents seat distortion, deformation, and blowout under high pressure, vacuum, or thermal cycling.
Consistent Low Torque	Seat dynamics are not dependent on flange compression. Provides uniform, low operating torque throughout valve life.
Extrusion Resistance	Rigid support ring eliminates seat extrusion into the flow path, extending service life (up to 10x longer than standard seats).
Isolation of Body/Stem	The cartridge seat completely isolates the valve body and stem from the line media, preventing corrosion of metal parts.

밀봉 메커니즘

Primary Seal: Formed by preloaded contact between the precision-machined disc hub and the flatted sealing surfaces of the cartridge seat.
Secondary Seal: Achieved by an engineered interference fit of the stem through the seat, providing additional sealing integrity around the shaft.

Dimensions & Weights (Reference Values – Wafer Type, PN16)

*Note: Dimensions vary by manufacturer. The following are based on industry standards (EN 558 Series 20). Wafer bodies are shorter than lugged bodies. Request certified drawing for exact dimensions. *

DN (mm)	L (Face-to-Face) mm	D (Flange Dia.) mm	H (approx. open) mm	Body Length (L1) mm	Weight (approx.) kg
50	43	165	150	32	2.5
65	46	185	165	32	3.2
80	46	200	180	32	4.5
100	52	220	210	37	6.0
125	56	250	235	41	8.0
150	56	285	260	41	9.0
200	60	340	310	46	15.0
250	68	405	360	51	24.0
300	78	460	420	56	35.0
350	78	520	470	56	48.0
400	102	580	520	60	72.0
450	114	640	570	67	98.0
500	127	715	620	70	125.0
600	154	840	740	80	195.0

*(Note: Body length (L1) is shorter for wafer style; weight is typically 10-15% less than lugged version due to absence of threaded inserts and shorter body.)*

테스트

Shell Test: 1.5 x rated pressure – No visible leakage.
Seat Test: 1.1 x rated pressure (bi-directional) – Bubble tight shut-off (Rate A).
Vacuum Test: Suitable for full vacuum service (e.g., 0.08 MPa).

Options & Accessories

작업: Hand lever (with infinite positioning), Worm Gearbox (with handwheel), Pneumatic Actuator (double-acting or spring return), Electric Actuator.
Position Indication: Mechanical visual indicator, limit switch boxes, positioners.
Stem Extension: For buried or insulated lines.
Anti-Static Device: Per ISO 5211.
Fire-Safe Design: Optionally available to API 607.

Standards & Certifications

범주	기준
밸브 설계	ISO 10631 / EN 593 / API 609 / MSS SP-67
대면	EN 558 / API 609 / ISO 5752
Flange Connection	EN 1092-2, ASME B16.5, JIS B2220
Top Flange	ISO 5211
테스트	EN 12266-1, API 598, ISO 5208
Potable Water	WRAS / KTW (for EPDM seats)
Fire Safety	API 607 (Optional)

Installation Notes (Wafer Type)

Centering: Wafer valves rely on the pipe flanges for centering. Ensure valve is centered between flanges before tightening bolts.
Gaskets: Cartridge seat acts as the gasket between flanges; no additional gaskets are required.
Dead-End Service: Not suitable for dead-end service. Wafer valves must be installed between two flanges.
Bolt Length: Use longer bolts to pass through both flanges and the valve body.

Ordering Information

To ensure correct selection, please specify:

밸브 유형: Wafer Concentric Butterfly Valve with Cartridge Seat
Size (DN / Inch)
Pressure Rating (PN / Class)
Seat Material (EPDM, NBR, Viton, PTFE)
Disc Material (SS304, SS316, etc.)
Body Material (Ductile Iron, Carbon Steel, etc.)
Operation Required (Lever, Gearbox, Actuator)
Flange Standard (EN 1092-2, ASME B16.5, etc.)
Any Special Requirements (Fire-safe, Anti-static, etc.)

This data sheet is a guideline based on standard industry practice for cartridge seat wafer concentric butterfly valves. Always refer to the manufacturer’s certified drawings for exact dimensions and ratings.

보증:

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