Cast Steel Globe Valve

Yoke Sleeve
The standard material of the Yoke Sleeve is Nodular Ni-resist D2 with over a 1150° C(2100° F)dissolution point in conformity with API Std. Specifications.

Bolting
The body-bonnet bolts are manufactured in accordance with API Std. 600 specifications. The nuts also strictly conform with ANSI B1.1 The stud-bolt nuts. Hexagonal, rigid and hot-forged, bear material notation as well as do the bolt nuts made according to ANSI B18.2.2

Bonnet
The bonnet is integral or separate with the yoke and is the same material as the body. The body-bonnet flange drilling is spot-faced to exactly meet stud bolt nuts. The back seat bushing in the bonnet guarantees that the packing can be replaced even when the valve is fully opened. The stem packing dimensions of the stuffing box are in accordance with API Std. Specifications.

Stem
The heat-treated stems of one-piece construction insure adequate mechanical properties and surface hardness. Friction at the time of opening and shutting is reduced to a minimum friction to accurate machining and lapping.
The round finished surface of the stem head helps to achieve point contact with the inside of the disc housing to eliminate friction.

Disc
The disc of our globe valves is a loose disc and can freely revolve around the stem. This prevents friction and galling with the seating surface when the valve is shut. The disc is furnished with a conical seating surface that has been ground and lapped to a mirror finish. It is of one-piece construction, and forged and heat-treated to deliver the required mechanical properties and hardness.

Body
The cast steel body is designed to insure a wall thickness which is greater at any point than the minimum specified by API Std. 600. Port and seat passage dimensions contorm to ANSI B16.5 Pipe Fitting. The screw-in type seat ring is standard to allow interchangeadility. The standard boyd-bonnet joint is mate-femate. And the flange is round for all valves, Accurate machining insures perfect ccaxiafity of the valve ends and seat ring in addition to exact perpendicularity of the body-bonnet flanges.

Design
JINGJIA cast steel globe valve are designed and manufactured to provide maximum service life and dependability. All globe valves are full ported and meet the design requirements of American Petroleum Institute Standard API 600 & API 6D, BS EN 13709 and generally conform to American Society complete range of body/bonnet materials and trims.

Rang of Materials
Standard body/bonnet materials include nine grades of carbon, low alloy and stainless steels, For special apolications they can be supplied in other grades of alloy and stainless steell, There's'a full range of trim materials to match any service. Optional packing and gasket materials are available for a full range of service conditions.

Available Modifications for JINGJIA Cast Steel Valves
Trim Changes
End Connection Modifications
Packing and Gasket Changes
Operator Mounting
Handwheel Extensions.

Pressure EqualizingBy-pass
Customer Specified Coatings
Weld End Bore Changes
Oxygen & Chlorine Cleaning & Packaging.


Applicable Standards
Steel Globe Valves, BS EN 13709/API 600, JIS
Steel Valves, ASME B16.34
Face To Face, ASME B16.10, JIS
End Flanges, ASME B16.5, JIS
Buttwelding Ends, ASME B16.25
Inspection And Test, API 598.

Design Description
Straight Pattern Body Design
OS & Y, Outside Screw And Yoke
BB, Bolted Bonnet
Yoke Integral With Bonnet
Rising Stem And Handwheel
Loose Disc, Choice Of Plug Or Ball
Renewable Seat Ring
Impact Handwheel For 10" & Above
Horizontal Service
Flanged Or Buttwelding Ends
Available With BG Operator.