Globe Valve : Pressure Seal Bonnet Type
Pressure Seal Bonnet | Product Range | Special Specification

The standard material of the Yoke Sleeve is Nodular Ni-resist D2 with over 1150 degree (2100F) dissolution point in conformity with API Std. Specifications.
The bonnet is of a steel forging identical to the body to insure high reliability. The bonnet has a perfect body-bonnet seal and both ease of dismantling and reassembly are ensured. The body and bonnet of our valves are carefully machined to achieve perfect coaxiality and eliminate any misalignment which may cause damaged stems.
The stem, of one-piece construction, is heat treated to secure the adequate mechanical properties and surface, hardness. Accurate machining and grinding insure that there is minimized friction during valve opening/shutting. The round head of the stem gives a point contact with the  inside of the disc housing and thus prevents galling.
All of our valves are equipped with a backseat to allow packing replacement with the valve fully opened. The conical shape contact seat in the bonnet assembly in integrally stelite faced. 
The disc of our gloves is a loose disc which freely revolves around the stem, thereby preventing friction and galling with the seating surface when the valve is shut. The outside diameter of the disc is accurately finished and cylindrical on shape to travel along the body guides. A stelite 6 layer is applied to the conical seating surface of the disc. The deposit Undergoes a special heat treatment to secure the required hardness and soundness. In addition, the lapped finish insures a perfect mating with the seats.
The stelite 6 seating surface is integrally applied to the body by means of welding in all valve sizes. Perfect mating of the disc surfaces is achieved by lapping applied to the seating surface. 
The cylindrically shaped valve body prevents distortion or undue stress under extreme working conditions. In addition, adequate padding ensures a sound cast structure in the critical areas. The wall thickness 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 Bonnet   [top]

NO Name of Part Astm Spec.
15 HANDLE NUT Steel
16 SET SCREW Steel
19 HAND WHEEL A395
21 PACKING Commercial
22 GASKET Commercial
30 STOPPER A283-D

For Cast Carbon Steel
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

BONNET

 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
5

STEM

 A182-F6a A182-F6a A182-F6a A182-F6a A182-F6a A182-F304
6

DISC GLAND

 A217-CA15 A217-CA15 A217-CA15 A217-CA15 A217-CA15 A182-F304
8

PACKING GLAND

 A276-410 A276-410 A276-410 A276-410 A276-410 A276-304
9

GLAND FLANGE

 A105 A105 A105 A105 A105 A105
10

YOKE SLEEVE

 A439-D2C A439-D2C A439-D2C A439-D2C A439-D2C A439-D2C
11

BONNET FLANGE BOLT

 A193-B7 A193-B7 A193-B7 A193-B7 A193-B7 A320-L7
13

GLAND BOLT

 A193-B7 A193-B7 A194-B7 A194-B7 A194-B7 A320-L7
14

GLAND NUT

 A194-2H A194-2H A194-2H A194-2H A194-2H A194-4
26

YOKE

 A216-WCB A217-WC1 A217-WC6 A217-WC9 A217-C5 A352-LC1/LC2/LC3
27

YOKE BOLT

 A193-B7 A193-B7 A193-B7 A193-B7 A193-B7 A320-L7
28

YOKE NUT

 A194-2H A194-2H A194-2H A194-2H A194-2H A194-4
31

STOPPER PIN

 A276-410 A276-410 A276-410 A276-410 A276-410 A276-304
32

PACKING WASHER

 A276-410 A276-410 A276-410 A276-410 A276-410 A276-304
33

RETAINER

 A276-410 A276-410 A276-410 A276-410 A276-410 A276-304
34

HINGE CLAMP

 A216-WCB A217-WC1 A217-WC6 A217-WC9 A217-C5 A352-LC1/LC2/LC3
35

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'~ 26'

Optional Specification   [top]
Eletric Actuator Operated Chain Wheel Operated Gear Operated By-pass Valve Limit Switch
Drains
ETC.