API600 CS Gate Valve

API600 CS Gate Valve

eno-astm-a216-wcc-flanged-rf-rtj-gate-valve-class-150-300-600

 

 

 

 

 

 

INVESTMENT CASTING

Investment casting shall be manufactured up to 1 1/2″ for class 150 and 300.

VALVE SHELL MATERIALS

Shell materials shall be in accordance with ASTM A351 Grade CF8M & CF8 and the others are optional.

ASTM DESIGNATION MAXIMUM WORKING TEMPERATURE℉(℃)
A351 Gr. CF8 1500℉ ( 816℃ )
A351 Gr. CF8M 1500℉ ( 816℃ )
A351 Gr. CF3 800℉ ( 427℃ )
A351 Gr. CF3M 850℉ ( 454℃ )
A351 Gr. CF8C 1500℉ ( 816℃ )
A351 Gr. CN7M 300℉ ( 149℃ )
A890 Gr 4A ( UNS J92205 ) 600℉ ( 316℃ )
A890 Gr 6A ( UNS J93380 ) 600℉ ( 316℃ )

※ At temperatures over 1000℉, use the material only when the carbon contents is 0.04% or higher.

OPTIONAL BONNET FLANGE GASKET MATERIAL

Depending on service conditions, various materials are available optionally for flange gasket and stem packing.

A. Gasket materials
1. Glass fiber sheet
2. Spiral wound material (Graphite or PTFE)
3. PTFE
4. Metal ring
5. Graphite

B. Packing materials
1. PTFE
2. Graphite
3. Glass fiber sheet

DESIGN FEATURES OF PK STAINLESS STEEL GATE VALVE WEDGES

ENO Valve adopts an H-shaped flexible wedge of which the size is 3″ and larger for Class 150 and 2″ and higher for Class 300/600. The H-shaped flexible wedges are featured with mechanical flexibility to be able to adjust to the shape of body seat for secure mutual contacts.
It has a particular importance when large gate valve is applied to extremely high pressure and temperature that temporary deformation may occur in valve all the time.
If the H-shape wedge is provided, operating torque would get smaller, seat wear less, and valve closing tighter.

UNIT : NPS

ONE PIECE SOLID WEDGE FLEXIBLE ONE PIECE WEDGE
CLASS
150 2 1/2 & SMALLER 3 & LARGER
300 1 & SMALLER 1 1/2 & LARGER
600 2 & LARGER

DESIGN FEATURES OF GATE VALVE YOKE SLEEVE

It is manufactured by two different ways depending on the valve size.

TYPE A TYPE B
5 AND SMALLERTYPE 6 AND LARGER

UNIT : NPS

DESIGN FEATURES OF GATE VALVE YOKE

On 10″ and smaller valve, the yoke is integrated with bonnet.
On 12″ and larger valve, the yoke is separated from bonnet.

DESIGN FEATURES OF VALVE BONNET BOLTS

It is manufactured by two different ways depending on valve class and size.

CLASS SIZE BOLT
Type A 150 5 AND SMALLER HEX. HEAD
Type A 300 2 1/2 AND SMALLER HEX. HEAD
Type B 150 6 AND SMALLER FULL THREAD. BOLT & NUT
Type B 300 3 AND SMALLER FULL THREAD. BOLT & NUT

UNIT : NPS

DESIGN FEATURES OF VALVE HAND WHEELS

Hand wheels are made in accordance with ASTM A 197 for external dimension 560mm and ASTM A216 WCB for over 560mm. A hammer blow type hand wheel of ASTM A216 WCB is provided for Class 150 (size 8) VALVE and Class 300 and over valve (size 6″)

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