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6 Inch Butterfly Valve

6 Inch Butterfly Valve


Description of 6 Inch Butterfly Valve:

ZECO provides detailed installation instructions to ensure high performance and long service life of the 6 inch butterfly valve. The capacity if piping flanges and valve depends the deformation of gaskets. Acting force of bolting is not only resists force to loosen the connection, but also to keep necessary compressing stress. Taking note of the force does not exceed the gasket load and pressure load. In order to ensure good connection, following instructions shall be noted.

(a) Check flange surface, if any defect appears leakage, groove or impress, repair before installation;
(b) 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 excessive pre-compression flange of the possibility of exceeding the prescribed stress. To fit 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;
(c) Gasket have the capacity of resisting deformation and damage;
(d) Check the centration of assemble-part flanges, Lubricate the threads of boltings. Boltings shall be fasten sequential to make sure level contact between flange and gasket.

Features of 6 Inch Butterfly Valve:

1. One of the advantage of ZECO 6 inch butterfly valve is fast closure;

2. One of the advantage of ZECO 6 inch butterfly valve is disc sealing material is high grade rubber or Teflon, which successfully resist aging and abrasion;

3. One of the advantage of ZECO 6 inch butterfly valve is the bracket connected with the drive device conforms to ISO5211 standard;

4. One of the advantage of ZECO 6 inch butterfly valve is 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


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