SCH8O/DIN UPVC/CPVC Coupler

UPVC/CPVC Coupler is a high-performance pipe connector widely used in construction and industrial applications. Made of UPVC (unplasticized polyvinyl chloride) and CPVC (chlorinated polyvinyl chloride) materials, it features corrosion resistance, chemical resistance, and heat resistance.

This coupler is designed to connect two pipes of the same diameter, ensuring smooth fluid transmission. It offers sealing and strength, is easy to install, and highly durable, making it suitable for water supply, drainage, and chemical liquid transportation systems. Its lightweight design also facilitates handling and installation.

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Parameter Application Technical Standards

SIZE/NOM.			dn20	dn25	dn32	dn40	dn50	dn63	dn75	dn90	dn110	dn140	dn160	dn225	dn280	dn315
			(DN15)	(DN20)	(DN25)	(DN32)	(DN40)	(DN50)	(DN65)	(DN80)	(DN100)	(DN125)	(DN150)	(DN200)	(DN250)	(DN300)
			(1/2")	(3/4")	(1")	(1-1/4")	(1-1/2")	(2")	(2-1/2")	(3")	(4")	(5")	(6")	(8")	(10")	(12")
DIN	d1		20.3	25.3	32.3	40.3	50.3	63.3	75.3	90.3	110.4	140.5	160.5	226.25	281.45	316.85
	d2		20.1	25.1	32.1	40.1	50.1	63.1	75.1	90.1	110.1	140.2	160.2	225.05	280.05	315.05
	UPVC	D	26.5	32	39.8	49	60	74.6	88	104	127	161	185	259.4	310	350
		L	35	41	48	56	66	80	92	107	128	160	180	248	302	349
		I	16	19	22	26	31	38	44	51	61	76	86	119	146	165
	CPVC	D	26	32	41	50.6	62.8	79	91	108.6	132.4	164.4	188.6	259.4	310	350
		L	37	42	49	57	68	81	94	108	130	161	181	248	302	349
		I	16.75	19.25	22.5	26.5	31.5	38	44	51	61.5	76.5	86.5	119	146	165
ANSI	d1		21.51	26.87	33.62	42.4	48.54	60.65	73.39	89.31	114.81	141.81	168.81	219.8	273.81	324.61
	d2		21.25	26.6	33.33	42.06.	48.18	60.27	72.9	88.8	114.21	141.11	168	218.8	272.67	323.47
	D		29.5	35.2	43.6	53.2	60	72.8	88	108	132	164	191	246	306	360
	L		48.5	55	61.2	69.6	77	83	97	108	130	160	168	218	266	317
	I		22.2	25.5	28.6	32.8	36	39	46	50.5	60	70	79.5	104	128	153
JIS	d1		22.4	26.45	32.56	38.63	48.73	56.82	58.63	89.66	114.27	140.22	165.16	216.68	267.21	318.66
	d2		21.75	25.7	31.71	37.67	47.76	55.77	57.67	88.63	113.2	139.01	163.9	214.6	264.88	315.88
	D		29.5	35.2	43.6	53.2	60	72.8	88	108	132	164	191	246	306	360
	L		48.5	55	61.2	69.6	77	83	97	108	130	160	168	218	266	317
	I		22.2	25.5	28.6	32.8	36	39	46	50.5	60	70	79.5	104	128	153

Company

Zheyi Pipeline (Wuhan) Co., Ltd.

ZHEYI Group is China SCH8O/DIN UPVC/CPVC Coupler For Food Industry/Automotive/Electronic Suppliers and Custom SCH8O/DIN UPVC/CPVC Coupler For Food Industry/Automotive/Electronic Factory. We were founded in 2007, specializing in R&D, manufacturing, selling, and service of industrial pipelines of CPVC, and UPVC. It has obtained a Production License of Special Equipment, Zhejiang Province water-related products sanitary license approval document, IS09001 quality management system certificate, IS014001 environmental management system certificate, IS045001 occupational health and safety management system certificate and other certificates. It also holds more than 50 independent intellectual property rights and self-management import and export power. To provide diversified products and better service, the company has introduced advanced technology, tooling equipment, and unique raw materials and management systems from Germany and America. Over the years, our products are widely used in the chemical industry, metallurgy, photovoltaic, nuclear power, lithium, electronic semiconductor, food, medicine, automotive, industrial water treatment and other industries in acid and alkali liquid, ultra-pure water, drinking water, electronic grade water, industrial wastewater pipeline transportation. Currently, ZHEYI Group has set up over 30 sales companies nationwide. Categories of products are exported to Europe, America, Southeast Asia and other countries and regions. Our products are welcomed by customers in domestic and international markets.

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SCH8O/DIN UPVC/CPVC Coupler Industry knowledge

Analysis of Chemical Resistance and Temperature Adaptability of UPVC/CPVC Coupler in Industrial Pipeline Systems

In industrial pipeline systems, UPVC (unplasticized polyvinyl chloride) and CPVC (chlorinated polyvinyl chloride) couplers (pipe connectors) are widely used in multiple key industries due to their excellent chemical resistance, temperature resistance and mechanical strength. Different application scenarios have different requirements for the chemical stability and temperature adaptability of materials. The following is an analysis based on specific industries:

1. Chemical resistance analysis
The chemical resistance of UPVC and CPVC couplers depends on their molecular structure. CPVC has a higher chlorine content (about 63-69%) and has stronger acid, alkali and solvent resistance than UPVC (about 56%).

Industry application comparison:
Safe Drinking Water: UPVC Coupler complies with NSF/ANSI 61 standards, has no risk of plasticizer migration, and is suitable for cold drinking water transportation.

Industrial Water Treatment: CPVC Coupler can withstand oxidizing chemicals such as chlorine and sodium hypochlorite in water treatment, and is suitable for reverse osmosis (RO) and softened water systems.

Industrial Wastewater: CPVC performs better in high-concentration acid (such as sulfuric acid, hydrochloric acid) and alkali (such as sodium hydroxide) environments, and is suitable for electroplating and chemical wastewater pipelines.

Metallurgy: CPVC has better corrosion resistance than UPVC and can be used to transport acidic waste liquid containing heavy metal ions.

Electronic Semiconductor: UPVC/CPVC Coupler is used in ultrapure water (UPW) systems, and low ion precipitation must be ensured to avoid contamination of the wafer manufacturing environment.

Medicine: CPVC complies with FDA standards, is suitable for water for injection (WFI) and clean process pipelines, and is resistant to solvents such as ethanol and isopropanol.

2. Temperature adaptability analysis
The long-term use temperature range of UPVC is 0°C to 60°C, while CPVC can withstand -40°C to 93°C (up to 110°C in the short term) due to its higher chlorine content, and is suitable for high-temperature fluid transportation.

Industry application comparison:
Photovoltaic: CPVC Coupler is used in high-temperature coolant (ethylene glycol solution) circulation system, and its temperature resistance is better than UPVC.
Nuclear Power: CPVC is suitable for auxiliary cooling water systems of nuclear power plants and is resistant to medium and low temperature corrosive media.
Industrial Wastewater: CPVC can treat industrial wastewater at 40-80°C, such as printing and dyeing, and papermaking industries.
Medicine: CPVC can withstand high-temperature steam (short-term 100°C+) and is suitable for CIP/SIP (cleaning/sterilization) processes.

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