Swing Check Valve : Pressure Seal Cover
Pressure Seal Cover | Product Range | Special Specification

The hinge pin is inserted into the valve body to achieve pressure seal construction.
The cover material is a steel forging identical to the body to insure high dependability. The cover construction has a perfect body-cover tightness and ease of dismantling and reassembly are ensured.
The arm is of a steel material identical to the body. Larger sized valves are provided with a hinge bushing to reduce friction and to prevent galling.
The disc has a sufficient seating surface area which is ground and lapped to mirror finish. It is of one-piece construction and is heat treated to deliver the required mechanical properties hardness.
The Stelite 6 surface of the seat ring is integrally applied to the body by means of welding in all valve sizes. Perfect mating with the DISC surfaces attained by a lapping finish applied to the seating. 
The cylindrically shaped valve body prevents distortion or undue stress under extreme working conditions. Padding is also provided to achieve a sound cast structure in the critical areas. The wall thichkness is greater than, or in accordance with, API, ANSI and ASME requirements. The area  contacting the pressure seal gasket has a stainless steel 18/8 inlay to eliminate corrosion or wire drawing. The close tolerances of the inside diameter of this area are attained by accurate machining and honing finish.

Pressure Seal Cover   [top]


 

BILL OF MATERIAL

NO

NAME OF PART

ASTM SPECIFICATION

STANDARD

HIGH TEMPERATURE SERVICE

LOW TEMP.

1

BODY

A216-WCB

A217-WC1

A217-WC6

A217-WC9

A217-C5

A352-LC1/LC2/LC3

2

COVER

A216-WCB

A217-WC1

A217-WC6

A217-WC9

A217-C5

A352-LC1/LC2/LC3

3

DISC

A217-CA15

A217-WC1

A217-WC6

A217-WC9

A217-C5

A352-LC1/LC2/LC3

4

BODY SEAT RING

A105+HARD FACE

A105+HARD FACE

A105+HARD FACE

A105+HARD FACE

A105+HARD FACE

A182-F304

5

HINGE PIN

A276-410

A276-410

A276-410

A276-410

A276-410

A276-304

7

ARM

A216-WCB

A217-WC1

A217-WC6

A217-WC9

A217-C5

A352-LC1/LC2/LC3

11

BONNET BOLT

A193-B7

A193-B7

A193-B7

A193-B7

A193-B7

A320-L7

12

BONNET NUT

A194-2H

A194-2H

A194-2H

A194-2H

A194-2H

A194-4

25

PLUG

A194-2H

A194-2H

A194-2H

A194-2H

A194-2H

A194-4

33

RETAINER

A276-410

A276-410

A276-410

A276-410

A276-410

A276-304

36

BONNET CLAMP

A216-WCB

A217-WC1

A217-WC6

A217-WC9

A217-C5

A352-LC1/LC2/LC3

37

GASKET SPACER

A276-410

A276-410

A276-410

A276-410

A276-410

A276-304

 

Product Range   [top]

MATERIAL A216 WCB
A217 WC6, WC9, C5, C12
A352 LCB, LC1, LC2, LC3
A351 CF8, CF8M, CF3, CF3M
etc.
CLASS 600#, 900#, 1500#, 2500#
SIZE 2' ~ 24'

Optional Specification   [top]

By-pass Valve
Drains
ETC.