SCH8O/DIN UPVC/CPVC Handle Butterfly Valve

The UPVC/CPVC manual butterfly valve is a highly efficient and reliable fluid control device designed for various industrial and construction applications. It is suitable for controlling the flow of corrosive media such as acids, alkalis, and wastewater.

Its design ensures lightweight and easy operation, making it suitable for installation in confined spaces. The flexible opening and closing action, operated via a handle, allows users to easily adjust flow. The valve provides sealing performance, effectively preventing leaks and ensuring the safety and stability of the system. Its resistance to high temperatures and pressures enables stable operation under harsh conditions, making it widely used in water treatment, chemical processing, petroleum, and pharmaceutical industries.

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パラメータ応用技術基準

SIZE/NOM.		dn63	dn75	dn90	dn110	dn140	dn160	dn225
		(DN50)	(DN65)	(DN80)	(DN100)	(DN125)	(DN150)	(DN200)
		(2")	(2-1/2")	(3")	(4")	(5")	(6")	(8")
D1	DIN	160	180	196	228	258	287	344
	ANSI	155	178	192	229	254	284	343
	JIS	120	140	150	175	210	240	290
D2	DIN	125	145	160	180	210	240	295
	ANSI	121	140	152	191	216	241	298
	JIS	73	90	105	132	158	186	238
N-Φ	DIN	4-Φ19	4-①19	8-Φ19	8-Φ19	8-Φ19	8-Φ23	8-Φ23
	ANSI	4-Φ19	4-Φ19	4-Φ19	4-Φ19	8-Φ22	8-Φ22	8-Φ22
	JIS	4-Φ19	4-Φ19	8-Φ19	8-Φ19	8-Φ23	8-Φ23	12-Φ23
d		48	63	78	98	122	146	199
Φ1		124	124	124	124	170	170	170
H		223	245	270	308	352	382	452
H1		100	112	120	140	168	181	215
H2		143	155	172	194	223	239	280
L		43	46	49	54	64	70	88
L1		190	190	240	240	310	310	310

SCH80 / DIN · LEVER OPERATED

UPVC / CPVC Handle Butterfly Valve

Wafer · Lug · Full Sealing · PTFE/EPDM Liner

The SCH80/DIN UPVC/CPVC Handle Butterfly Valve is a quarter-turn flow control device designed for on-off and throttling service in corrosive and high-purity fluid systems. Manufactured to ASTM SCH80 and DIN standards, this valve features a disc that rotates 90° to regulate flow, with a lever handle providing visual position indication. The valve body is available in UPVC for general chemical service and CPVC for elevated temperature applications up to 93°C. 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.

DN40–DN300

Size Range

PN10–PN16

Pressure Rating

–20°C to +93°C

CPVC Range

Lever Handle

Operation

◈

Liner Sealing

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

◈

Chemical Compatibility

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

◈

Throttling Capability

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

◈

Wafer / Lug Options

Wafer style offers lightweight, low-cost installation between flanges. Lug style enables dead-end service and isolation of downstream piping sections.

Technical Specifications

Body Material UPVC · CPVC

Disc Material Solid UPVC/CPVC · Coated Ductile Iron (optional)

Liner Material EPDM · PTFE · Viton (FKM)

Connection Types Wafer · Lug (DIN or ANSI drilling)

Standards ASTM D2467 (SCH80) · DIN 8061/8062 · ISO 16136

Handle Type Lever handle with 10-position locking plate

Liner Selection Guide

EPDM Water, mild acids, alkalis, up to 80°C

PTFE Aggressive chemicals, solvents, high-purity, up to 93°C

Viton (FKM) Hydrocarbons, oils, strong oxidizers, up to 90°C

Liner selection should be verified against specific process chemistry and temperature to ensure service life and sealing performance.

Application Fields

◉

Chemical Processing

Acid and alkali transfer, dosing systems, reactor feed lines

◉

Electronics & Semiconductor

Ultrapure water distribution, chemical mechanical planarization (CMP) slurries

◉

Energy & Photovoltaics

Battery electrolyte, solar cell etching, nuclear cooling water

◉

Water Treatment

Industrial wastewater, RO feed, desalination, potable water

◉

Pharmaceutical & Food

Deionized water, CIP systems, sanitary process lines

◉

Automotive & General

Paint circulation, parts washing, cooling water, wastewater

Installation Notes

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.
Flange standards: Compatible with DIN PN10/PN16 or ANSI Class 150 flanges. Verify bolt hole alignment.
Disc positioning: The disc should be in the closed position during installation to avoid damage to the liner.
Line velocity: For abrasive media, limit velocity to 2 m/s to extend liner life. For clean media, up to 5 m/s is acceptable.
Actuator mounting: For automated operation, use ISO 5211 mounting pad. Verify torque requirements.

Critical Operating Limits

Do not exceed 60°C for UPVC bodies. CPVC max 93°C continuous.
Not rated for steam service or rapid thermal cycling.
Avoid operating the valve in the 5–85% open range for extended periods in abrasive media.
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.
Protect from direct UV exposure. Use UV-stabilized material or apply protective coating.
Do not exceed the maximum pressure differential across the disc at any temperature.

Common Issues & Solutions

● Valve difficult to operate

Liner may be swollen or disc binding. Check liner compatibility with media. Lubricate stem with silicone-based grease. If resistance persists, replace liner.

● Leakage at flange connection

Verify flange bolts are torqued to specification (typically 20–30 Nm for DN50–DN150). Ensure gasket surfaces are clean and undamaged. Replace liner if flange face is compromised.

● Leakage past disc in closed position

Inspect liner for wear or deformation at the disc seating area. Replace liner if worn. For PTFE liners, check for cold flow at elevated temperatures.

● Handle position not locking

Check the locking plate for wear. Tighten the handle screw. Replace locking mechanism if worn.

会社

Zheyi Pipeline（Wuhan）Co.、Ltd。

ZHEYI Group はい中国 SCH8O/DIN UPVC/CPVC Handle Butterfly Valve 食品産業/自動車/電子用サプライヤーそしてカスタムメイド SCH8O/DIN UPVC/CPVC Handle Butterfly Valve 食品産業/自動車/電子用工場. 当社は2007年に設立され、CPVCおよびUPVC工業用パイプの研究開発、製造、販売、サービスに注力しています。特殊設備製造許可証、浙江省水関連製品衛生許可証、ISO9001品質マネジメントシステム認証、IS014001環境マネジメントシステム認証、IS045001労働安全衛生マネジメントシステム認証など、数多くの認証を取得しています。50件以上の自主知的財産権と自社運営の輸出入権を有しています。多様な製品とより良いサービスを提供するために、ドイツとアメリカの先進的な技術、工具設備、独自の原材料と管理システムを導入しています。長年にわたり、当社の製品は化学、冶金、太陽光発電、原子力、リチウム電池、電子半導体、食品、医薬品、自動車、工業用水処理などの業界において、酸・アルカリ液、超純水、飲料水、電子グレード純水、産業廃水のパイプライン輸送に広く利用されています。現在、ZHEYIグループは全国に30社以上の販売会社を設立しており、各種製品はヨーロッパ、アメリカ、東南アジアなどの国と地域に輸出されており、国内外の顧客から深い好評を得ています。

栄誉の証明書

ニュース

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厳格な品質管理

ZHEYIグループは「品質第一」の原則を堅持し、国際的に先進的な設備と高品質の原材料を採用し、生産のすべての段階を厳密に管理し、優れた性能と美しい外観を備えたパイプライン製品の提供に取り組んでいます。

当社は、日本の積水化学やアメリカのルーブリゾールなど、最先端の生産設備と高品質の材料を使用しています。「ZHEYI」は、精巧な生産技術と専門的な管理体制を完璧に融合させ、すべての製品は製造から検査、最終出荷に至るまで厳格な品質管理を受けており、外観と機能の完璧な融合を保証しています。
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ZHEYIでは、すべての製品を細部までこだわり抜いて作り上げています。洗練された美しいデザインだけでなく、優れた本質的な品質にも常にこだわり、厳格な性能試験を実施することで、過酷な環境下でも製品の安定性と耐久性を維持しています。:

● 密度テスト: 構造の均一性と安定性を確認するために材料の密度を測定します。
● ビカット軟化温度試験：高温条件下での材料の軟化度を評価し、さまざまな環境における製品の変形抵抗能力を確認します。
● オーブンテスト：長期耐熱性をシミュレートし、製品が長時間高温に耐えられるかどうかを検証します。
● 静水圧試験: 高圧条件下でのパイプの強度を評価し、製品の安全性と信頼性を確保します。
● 落下ハンマー衝撃テスト: 輸送中、設置中、日常使用中の製品の耐衝撃性をテストします。

SCH8O/DIN UPVC/CPVC Handle Butterfly Valve 業界知識

How to correctly select UPVC/CPVC handle butterfly valve? Key parameters and industry application guide

UPVC (unplasticized polyvinyl chloride) and CPVC (chlorinated polyvinyl chloride) handle butterfly valves are widely used in many industries due to their excellent corrosion resistance, lightweight design and economy. Correct selection requires comprehensive consideration of material properties, operating parameters and industry needs. The following are key selection points and typical industry application analysis.

1. Key selection parameters
Media compatibility
UPVC is suitable for weak acids, weak bases and normal temperature water, while CPVC has higher temperature resistance (up to 90°C or more) and can withstand more corrosive media (such as concentrated acids and solvents).
It is necessary to confirm whether the medium components (such as chloride ions, organic solvents) react with the valve material.

Temperature and pressure range
UPVC is usually suitable for 0°C~60°C, and CPVC can be extended to -10°C~90°C.
The working pressure generally does not exceed PN16 (1.6MPa) and needs to be selected according to the pressure of the pipeline system.

Valve size and connection method
Common diameters are DN15~DN600, flange type (ANSI/DIN standard) or wafer type connection, which needs to match the pipe specifications.

Operation method
The handle butterfly valve is suitable for frequent manual opening and closing. If automatic control is required, a gearbox or pneumatic/electric actuator can be selected.

Sealing material
EPDM (water-resistant, weak acid and alkali), FKM (oil-resistant, strong acid) or PTFE (corrosion-resistant, high temperature), selected according to the medium.

II. Industry application guide
1. Safe drinking water
Applicable UPVC butterfly valves meet sanitary standards (such as NSF/ANSI 61) and are used in municipal water supply and water purification plant pipelines.
Pay attention to chlorine tolerance and avoid long-term contact with high-concentration disinfectants that may cause material aging.

2. Metallurgy industry
CPVC valves are more suitable for pickling and electroplating liquid (such as sulfuric acid and hydrochloric acid) transportation, and UPVC can be used in cooling water systems.

3. Photovoltaic
In the treatment of acid and alkali waste liquid in polysilicon production, CPVC has better corrosion resistance than metal valves.

4. Nuclear Power
Auxiliary cooling water or low-radioactive wastewater system needs to pass radiation resistance certification, and CPVC is usually selected to enhance stability.

5. Electronic Semiconductor
Ultrapure water (UPW) transportation requires no metal ion pollution, and UPVC butterfly valves are matched with high-purity EPDM sealing rings.

6. Medicine
Water for injection (WFI) or clean fluid pipelines, valves must meet FDA or GMP standards to avoid material precipitation.

7. Industrial Water Treatment
UPVC is suitable for reverse osmosis (RO) and softened water systems; CPVC is recommended for chemical agent addition (such as sodium hypochlorite).

8. Industrial Wastewater
In the case of heavy metal and high-salt wastewater, CPVC has better chemical corrosion resistance than UPVC.

III. Selection considerations
Avoid over-temperature use: UPVC is easy to deform at high temperatures, and CPVC needs to pay attention to long-term thermal stability.
Installation environment: Outdoor applications require UV protection (select gray/black valve body), and pay attention to low-temperature brittleness in cold areas.
Maintenance cycle: Regularly check the wear of the sealing ring to prevent medium crystallization or particulate matter from blocking the valve plate.

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