8" Flanged Diaphragm Valve, UPVC/ CPVC

Economical price 2 way PVC diaphragm valve with 8 inch (DN200) flanged port for flow and liquid control, available in UPVC and CPVC body material, PTFE diaphragm. This manual diaphragm valve is often found in water treatment, chemical processing and pharmaceuticals.

SKU: CCHN-FDV-DN200

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Delivery date: 6-25 days

Overview

Note: This diaphragm valve cannot be used for drinking water.

2 way flanged PVC diaphragm valve is a type of industrial valve used to control the flow of fluids in pipelines, especially when it is essential to prevent the fluid from coming into contact with the valve components.

Specification

Model	CCHN-FDV-DN200
Size	8 inch (DN200)
Structure Type	Flanged Type
Diaphragm Valve Assembly	Parts	Material
	Diaphragm	PTFE
	Film	EPDM
	Valve Body	UPVC, CPVC
	Valve Plate	UPVC, CPVC, Steel, Stainless Steel
	Cover Limit	AS
	Stud	Steel, Stainless Steel
	Retaining Nut	FRPP
	Washer	FRPP
	Wheel	Alloy Material
	Platen	Steel, Stainless Steel
	Double-Headed Stud and Nut	Steel, Stainless Steel
	Bonnet	UPVC, CPVC
	Yoke Nut	Ht300 Steel
	Stem	Steel, Stainless Steel

Dimension (Unit: mm)

Flanged PVC diaphragm valve dimension DN15 ~ DN100

Size	Valve Body Material	d	D	L	h	n-φ
8 inch (DN200)	UPVC	300	340	580	40	8-φ23
8 inch (DN200)	CPVC	300	340	575	40	8-φ23

Note: The above dimensions are for reference only, please refer to the actual product.

Detail

Flanged diaphragm valve detail

Working Pressure

Size	Working Pressure (MPa)
	UPVC			CPVC
	20~40℃	41~60℃	61~80℃	0~40℃	41~60℃	61~90℃
1/2" (DN15)	0.8	0.8	0.7	0.7	0.7	0.6
3/4" (DN20)	0.8	0.8	0.7	0.7	0.7	0.6
1" (DN25)	0.8	0.8	0.7	0.7	0.7	0.6
1-1/4" (DN32)	0.7	0.7	0.6	0.7	0.7	0.6
1-1/2" (DN40)	0.7	0.7	0.6	0.7	0.7	0.5
2" (DN50)	0.7	0.7	0.6	0.7	0.7	0.5
2-1/2" (DN65)	0.7	0.7	0.6	0.7	0.7	0.5
3" (DN80)	0.7	0.7	0.6	0.7	0.7	0.5
4" (DN100)	0.7	0.7	0.6	0.7	0.6	0.5
5" (DN125)	0.5	0.5	0.4	0.5	0.5	0.4
6" (DN150)	0.5	0.5	0.4	0.5	0.4	0.3
8" (DN200)	0.3	0.3	0.2	0.5	0.3	0.25
10" (DN250)	0.3	0.3	0.2	0.3	0.3	0.2

Tips: How does a flanged diaphragm valve work?

A flanged diaphragm valve is a type of industrial valve designed to control the flow of fluids. It operates using a flexible diaphragm, which is a membrane that separates the valve body into two chambers. The diaphragm is typically made of rubber or similar materials.

In a closed position, the diaphragm creates a seal, preventing fluid flow. When the valve needs to be opened, a mechanism such as a handwheel or actuator applies force to the diaphragm, causing it to flex and deform. As the diaphragm moves, it uncovers the flow path, allowing the fluid to pass through. This design provides excellent sealing properties and prevents leakage since the diaphragm isolates the fluid from the valve components. Flanged connections make it easy to install the valve in pipelines.

Flanged diaphragm valves are commonly used in applications requiring precise flow control, such as in the chemical, pharmaceutical, and water treatment industries. Their simplicity and reliable sealing make them suitable for various corrosive and abrasive media.