SCH8O/DIN UPVC/CPVC Pneumatic Butterfly Valve

Name: SCH8O/DIN UPVC/CPVC Pneumatic Butterfly Valve
Rating: 5 (99 reviews)

The pneumatic butterfly valve adopts a wafer-type design with a compact structure, small size, and lightweight design, making it convenient to install, transport, and maintain. It is driven by a pneumatic actuator that rotates the valve stem, enabling the disc to rotate quickly within the valve body by 90°, achieving rapid opening and closing with fast response. It precisely controls flow according to system requirements, providing stable and reliable throttling, cutoff, and isolation functions. The valve uses elastic sealing materials such as rubber or PTFE to ensure effective leakage prevention when closed. The pneumatic butterfly valve is suitable for various media such as water, oil, and steam and operates within a wide range of pressures and temperatures, meeting the demands of different piping systems.

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سابقة：صمام الفراشة الكهربائي
التالي：SCH8O/DIN UPVC/CPVC Electric Flange Ball Valve

المعلمة طلب المعايير الفنية تفاصيل

(1) Material: UPVC, CPVC
(2) Size: 2"-12", DN50-DN300, dn63-dn315
(3) Standards: ANSI, DIN
(4) Connection: flange
(5) Work pressure: 150PSI, 1.0MPa
(6) Operating temperature: UPVC(-10°C-60°C), CPVC(-10°C-90°C)
(7) Minimum air pressure: 45PSI, 0.4MPa
(8) Body color: UPVC (dark gray), CPVC (light gray)

SIZE/NOM.		dn63	dn75	dn90	dn110	dn140	dn160	dn225	dn280	dn315
		(DN50)	(DN65)	(DN80)	(DN100)	(DN125)	(DN150)	(DN200)	(DN250)	(DN300)
		(2")	(2-1/2")	(3")	(4")	(5")	(6")	(8")	(10")	(12")
D1		160	180	196	228	258	287	344	411	490
D2	DIN	125	145	160	180	210	240	295	350	400
	ANSI	121	140	152	191	216	241	298	362	346
	JIS	120	140	150	175	210	240	290	355	400
N-Φ	DIN	4-Φ18	4-Φ18	8-Φ18	8-Φ18	8-Φ18	8-Φ22	8-Φ22	8-Φ22	12-Φ22
	ANSI	4-Φ19	4-Φ19	4-Φ19	4-Φ19	8-Φ22	8-Φ22	8-Φ22	12-Φ25	12-Φ25
	JIS	4-Φ19	4-Φ19	8-Φ19	8-Φ19	8-Φ23	8-Φ23	12-Φ23	12-Φ25	16-Φ25
H1		100	110	132	155	167	180	225	260	280
W1		43	46	49	54	64	70	88	98	108
Torque (N · M)		10	10	15	22	40	45	65	-	-

Actuator working mode double-acting/single-acting (NC normally closed, NO normally open)

Specification	63	75	90	110	140	160	225	280	315
Specification	2"	2 1/2"	3"	4"	5"	6"	8"	10"	12"
Controlling stress	4~8
NAMUR standard air source interface	G 1/4"
Double acting actuator models	TBN052D	TBN063D	TBN075D	TBN083D	TBN092D	TBN105D	TBN7105D	TBN125D	TBN140D
Single acting actuator models	TBN063SK	TBN075SK	TBN083SK	TBN092SK	TBN105SK	TBN125SK	TBN125SK	TBN140SK	TBN160SK

SCH80 / DIN · PNEUMATIC · WAFER/LUG

UPVC / CPVC Pneumatic Butterfly Valve

Double-acting · Spring-return · Liner sealed · ISO 5211

The SCH80/DIN UPVC/CPVC Pneumatic Butterfly Valve is an automated quarter-turn flow control device engineered for on-off and throttling service in corrosive and high-purity fluid systems. Manufactured to ASTM SCH80 and DIN standards, this valve integrates a pneumatic actuator with a wafer or lug-style butterfly valve body. The actuator is available in double-acting or spring-return configurations, providing fail-safe positioning. The resilient liner — available in EPDM, PTFE, or Viton — provides bubble-tight shut-off across the full pressure range. The wafer and lug configurations allow for dead-end service and easy installation between standard flanges. The actuator mounting follows ISO 5211 standards. This valve is widely used in automated process control, chemical dosing, water treatment, and industrial manufacturing systems requiring lightweight, compact, and cost-effective flow control.

DN40–DN300 Size range

PN10–PN16 Pressure rating

–20°C to 93°C CPVC range

ISO 5211 Mounting pad

Liner Sealing

The replaceable EPDM, PTFE, or Viton liner provides a tight seal around the disc and flange faces, eliminating leakage paths and simplifying maintenance.

Automated Operation

Double-acting or spring-return actuators enable remote control, process automation, and fail-safe positioning without operator intervention.

Chemical Compatibility

UPVC and CPVC bodies resist a broad spectrum of acids, bases, and salts. Liner material can be selected to match specific chemical exposure.

Throttling Capability

The butterfly design allows for precise flow modulation across the 0–90° rotation range, providing control flexibility beyond simple on-off service.

Valve Specifications

Body UPVC · CPVC

Disc Solid UPVC/CPVC · Coated ductile iron

Liner EPDM · PTFE · Viton (FKM)

Connection Wafer · Lug (DIN/ANSI drilling)

Standards ASTM D2467 · DIN 8061/8062 · ISO 16136

Actuator Data

Type Double-acting · Spring-return

Supply pressure 4–8 bar

Mounting ISO 5211 · Direct mount

Rotation 90° · Adjustable stroke

Accessories Positioner · Limit switches · Solenoid

Actuator sizing depends on valve torque and supply pressure. Consult factory for selection.

Application Areas

Chemical Acid transfer · Caustic dosing · Reactor feed

Semiconductor UPW distribution · Chemical delivery · Wet benches

Energy Battery electrolyte · Cooling water · Solar etching

Water Wastewater · RO permeate · Desalination · Discharge

Pharma DI water loops · CIP systems · Sanitary lines

Automotive Paint circulation · Parts washing · Coolant
Installation Guidelines

Wafer installation: Center the valve between flanges. Use appropriate flange bolts and nuts. Tighten evenly in a cross pattern.

Lug installation: Bolt directly to one flange for dead-end service. Use full-face gaskets on both sides.

Disc positioning: The disc should be in the closed position during installation to avoid damage to the liner.

Air supply: Filtered, lubricated air at 4–8 bar. Use solenoid valve for remote control.

Actuator mounting: Ensure ISO 5211 mounting pad alignment. Use correct coupling and bracket.

Testing: Cycle valve manually and pneumatically before placing in service.
Critical Restrictions

Temperature: UPVC 60°C max · CPVC 93°C max · Do not exceed liner rating.

Air pressure: Do not exceed 8 bar supply pressure. Actuator torque increases with pressure.

Not rated for steam service. Avoid rapid thermal cycling and pressure surges.

Do not use EPDM liner with hydrocarbon solvents, oils, or strong oxidizers.

PTFE liner has limited abrasion resistance — not recommended for slurries with high solids content.

UV exposure: Use UV-stabilized material or apply protective coating.

Do not operate the valve in the 5–85% open range for extended periods in abrasive media.
Frequently Asked Questions

What is the difference between wafer and lug styles?

Wafer style is installed between two flanges and held in place by flange bolts. It is lightweight and cost-effective. Lug style has threaded inserts on both sides, allowing the valve to be bolted directly to one flange for dead-end service and isolation of downstream piping.

How do I select the correct liner material?

EPDM is suitable for water, mild acids, and alkalis up to 80°C. PTFE is recommended for aggressive chemicals, solvents, and high-purity applications up to 93°C. Viton (FKM) is used for hydrocarbons, oils, and strong oxidizers up to 90°C. Always verify compatibility with your specific process chemistry.

Can this valve be used for throttling control?

Yes, with a positioner and appropriate control signal (4–20 mA or 0–10 V). The pneumatic actuator provides proportional positioning, enabling accurate flow control. However, throttling service may reduce liner life compared to on-off service.

What accessories are recommended?

Common accessories include solenoid valves for remote on-off control, positioners for throttling, limit switches for position feedback, and filter-regulator-lubricator units for air preparation. Accessory selection depends on the application and control system requirements.

These pneumatic butterfly valves serve chemical, metallurgical, photovoltaic, nuclear, lithium, semiconductor, food, pharmaceutical, automotive, and water treatment industries — handling acids, alkalis, ultrapure water, potable water, electronic grade water, and industrial wastewater.
ASTM D2467 DIN 8061/8062 ISO 5211 SCH80 Wafer/Lug Pneumatic

شركة

Zheyi Pipeline (Wuhan) Co., Ltd.

مجموعة ZHEYI هي مورد SCH8O/DIN UPVC/CPVC Pneumatic Butterfly Valve صيني و مصنع SCH8O/DIN UPVC/CPVC Pneumatic Butterfly Valve مخصص. تأسست في عام 2007، وهي متخصصة في البحث والتطوير والتصنيع والبيع وخدمة خطوط الأنابيب الصناعية من CPVC وUPVC. حصلت على ترخيص إنتاج المعدات الخاصة، ووثيقة موافقة ترخيص المنتجات الصحية المتعلقة بالمياه في مقاطعة تشجيانغ، وشهادة نظام إدارة الجودة IS09001، وشهادة نظام إدارة البيئة IS014001، وشهادة نظام إدارة الصحة والسلامة المهنية IS045001 وشهادات أخرى. كما تمتلك أكثر من 50 حقوق ملكية فكرية مستقلة وقوة استيراد وتصدير ذاتية الإدارة. لتوفير منتجات متنوعة وخدمة أفضل، قدمت الشركة تكنولوجيا متقدمة ومعدات تصنيع ومواد خام فريدة وأنظمة إدارة من ألمانيا وأمريكا. على مر السنين، تُستخدم منتجاتنا على نطاق واسع في الصناعة الكيميائية والمعادن والطاقة الكهروضوئية والطاقة النووية والليثيوم وأشباه الموصلات الإلكترونية والأغذية والأدوية والسيارات ومعالجة المياه الصناعية وغيرها من الصناعات في السوائل الحمضية والقلوية والمياه فائقة النقاء ومياه الشرب والمياه ذات الدرجة الإلكترونية ونقل أنابيب مياه الصرف الصناعي. حاليًا، أنشأت مجموعة ZHEYI أكثر من 30 شركة مبيعات على مستوى البلاد. يتم تصدير فئات المنتجات إلى أوروبا وأمريكا وجنوب شرق آسيا ودول ومناطق أخرى. يتم الترحيب بمنتجاتنا من قبل العملاء في الأسواق المحلية والدولية.

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