6 inch Wafer Type Butterfly Valve

Description

Butterflly valve 6 inch means the valve size is 6 inch, and in DN it is DN150.

What is a 6 Inch Wafer Type Butterfly Valve?

6 inch butterfly valve for on-off control of air, oil, and other media compatible with the materials of construction. Wafer style valve sandwich mounts between customer-supplied ANSI /ASME Class 150 and other international standard flanges.

Dimensions & Weight of 6 Butterfly Valve

Pressure Rating	Face to Face Dimension(in mm)				Weight
	RF Long Pattern	RF Short Pattern	Wafer Type	Lug Type	kg
CLASS 150	267	140	57	57	65
CLASS 300	403	210	59	59	90
CLASS 600	559	210	78	78	170

Installation of Butterfly Valve 6 inch

ZECO provides detailed installation instructions to ensure high performance and long service life of the 6 inch butterfly valve. The capacity of piping flanges and valves depends on the deformation of gaskets. The acting force of bolting not only resists force to loosen the connection but also keeps necessary compressing stress. Take note of the force does not exceed the gasket load and pressure load.

In order to ensure a good connection, the following instructions shall be noted.

• Check flange surface, if any defect appears leakage, groove or impress, repair before installation;
• The installation requests of Cast iron flange are more than the ductile cast iron. Proposed to use low-strength steel Bolted to reduce as a result of the excessive pre-compression flange of the possibility of exceeding the prescribed stress. To fit a flat flange gasket in the flat flange to prevent excessive torque of bolt flange damage. Should not be confused with convex planar flange of the loaded flange In the cast iron flange connection is particularly important that the top is installed on the better to ensure that in the absence of excessive load bolted gasket circumstances make an appropriate compaction force;
• Gaskets have the capacity of resisting deformation and damage;
• Check the centration of assemble-part flanges, Lubricate the threads of boltings. Boltings shall be fastened sequentially to make sure level contact between the flange and gasket.

Features of 6 Butterfly Valve:

• Unique wave line seat and disc shape reduce the required torque and extend the life of the valve.
• The disc seat is vulcanized to a phenolic backup ring guaranteeing positive control of seating torque while eliminating seat distortion.
• Precision machined 316SS disc with two-piece stem (shaft) construction, enhances the flow capacity of the valve and reduces turbulence.
• Stem utilizes PTFE/graphite bearings with V-type ring seals to prevent leakage.
• The bracket connected with the drive device conforms to ISO5211 standard;
• The stem is designed to meet API 609 requirements with a blowout-resistant design.

Material of 6 Inch Butterfly Valve:

No	Part	Material
1	Body	ASTM A351 CF8M
2	Seal Ring	Graphite + SS316
3	Retainer Flange	ASTM A182 F316
4	Pin	ASTM A276 316
5	Disc	ASTM A351 CF8M
6	Stem	ASTM A276 316
7	Stem Packing	Graphite
8	Stem Beating	SS316 + PTFE
9	Bolt	ASTM A193 B8
10	Nut	ASTM A194 8
11	Yoke	ASTM A216 WCB