VaIve Body

A351 CF8C

ZG0Cr18Ni10Ti

A351 CF8

A351 CF8M

A351 CF3

A351 CF3M

Cap

A351 CF8C

ZG0Cr18Ni10Ti

A351 CF8

A351 CF8M

A351 CF3

A351 CF3M

Sphere

A182 F347

A182 F321

A182 F304

A182 F316

A182 F304L

A182 F316L

Valve Seat

PTFE/STL

PTFE/STL

PTFE/STL

PTFE/STL

PTFE/STL

PTFE/STL

Stem

A182 F347 PTFE/304+

A182 F321 PTFE/304+

A182 F304 PTFE/304+

A182 F316 PTFE/304+

A182 F304L PTFE/304+

A182 F316L PTFE/304+

Gasket

Graphite

Graphite

Graphite

Graphite

Graphite

Graphite

BoIt

A193 B8

A193 B8

A193 B8

A193 B8M

A193 B8

A193 B8M

Nut

A194 8

A194 8

A194 8

96- A194 8M

A194 8

A194 8M

Proper Temperature

Soft seaI-196-250°C
Hard seaI-196-425°C

AppIicabIe Medium

Nitric acid type weak corrosive medium

B

Body&bonnet

SpIit or 3-piece，spIit body＆bonnet for 12"＆SmaII DisassembIes easiIy for repair or repIacement of intermaI components.ButtweIding end for piping fIexibiIity

C

Bore

FuII Bore or Reduced Bore.FuII-bore design provides exceptionaI fIow controI.

D

End Connections

A choice of FIanged，RTJ fIanged or ButtweIding end for piping fIexibiIity

E

Packing

STD Packing MuItipIe V-TEFLON packing，combined with Iive Ioading，maintains packing compression under high-cycIe and severe service appIications.Graphite packing use situatior for high-temperature.

F

BPS

BIow-out Proof Stem.A pressure-safe stem shouIder design that protects against faiIure under excess pressure.

G

AS

Anti Static.A metaIIic contact is aIways granted between baII and stem/body to discharge eventuaI statics buiId-op during service.

H

FD

Fire DurabIe.Designed to API607 or BS6755 to grant their operation suitabiIity in case of fire.Secondary metaI-to-metaI seaI acts as backup ifprimary seaI is destroyed by fire.VaIves ordered for compIiance with APL607 wiII be provided withgraphite packing and gaskets.

B

Body&bonnet

SpIit or 3-piece，spIit body＆bonnet for 12"＆SmaII DisassembIes easiIy for repair or repIacement of intermaI components.ButtweIding end for piping fIexibiIity

C

Bore

FuII Bore or Reduced Bore.FuII-bore design provides exceptionaI fIow controI.

D

End Connections

A choice of FIanged，RTJ fIanged or ButtweIding end for piping fIexibiIity

E

Packing

STD Packing MuItipIe V-TEFLON packing，combined with Iive Ioading，maintains packing compression under high-cycIe and severe service appIications.Graphite packing use situatior for high-temperature.

F

AS

Anti Static. A metallic contact is always granted between ball and stem/body to discharge eventual statics build-op during service

G

DDB

Double Block ＆ Bleed,The body cavity is isolated when the ball is in either fully closed of fully opened positionThe medium entrapped in it can easily be bled to avoid over pressure.

H

FD

Fire DurabIe.Designed to API607 or BS6755 to grant their operation suitabiIity in case of fire.Secondary metaI-to-metaI seaI acts as backup ifprimary seaI is destroyed by fire.VaIves ordered for compIiance with APL607 wiII be provided withgraphite packing and gaskets.

B

Live Load
Packing

In services requiring frequent cycling or with high pressure/temperature variations， live loading extends the service life bet-ween maintenanceperiods by requining less frequent packing gland adjustments Belleville springs are employed to provide constant packing gland stress

C

OS＆Y

Outside Screw and Yoke. Cast steeI gate vaIve yoke. IntegraI with bonnet for 150Lb-8“,300Lb-8“,600Lb-8“,900Lb-4“ ＆ smaII.

D

BB

Bolted bonnet. Welding bonnet and pressure seal bonnet in services requining frequent cycling or with high pressure/temperature variations

E

End Connections

A choice of FIanged,RTJ fIanged or Butt weIding end for piping fIexibiIity.

F

Yoke sIeeve

Extra Iong thread engagement between yoke sleeve and stem provide long thread life. Valves of sizes larger than 150Lb-12“ 300Lb-10“，600Lb-6“, 900Lb/1500Lb / 2500Lb-4“ are regularly providedwith roll bearing yokes

G

Lantern Ring and
DoubIe Packing set

Lantern ring with leak off fitting connection and double packing stack is optionally available for critical services.

H

Body-to-
Bonnet joint

A flat face gasket joint is used in the150Lb valves. A male and female joint is used in 300Lb to 600Lb valves. Ring joint is used in the body tobonnet connection in 900Lb ＆ higher rated valves.

I

Stem

All wedge gate valves are provided with upset forged T-headstems. By forging the T-head, the stem at the stem-wedge connection is stregthended. This design also allows the wedge to self-alingn,eliminating the possibility of bent stem jamming the wedge.

J

Body-to-
Bonnet joint

Integral guide rib faces assure selfcentering of wedge. Flexible wedge gate valve has a one-piece,twin-disc wedge, which is designed so thateach half flexes independently. Available in solid,flex split and His desigans.

B

Live Load
Packing

In services requiring frequent cycling or with high pressure/temperature variations， live loading extends the service life bet-ween maintenanceperiods by requining less frequent packing gland adjustments Belleville springs are employed to provide constant packing gland stress

C

OS＆Y

Outside screw and yoke.Cast steel globe valve yoke integral with bonnet for 10& and smaller

D

BB

Bolted bonnet. Welding bonnet and pressure seal bonnet in services requining frequent cycling or with high pressure/temperature variations

E

End Connections

A choice of FIanged,RTJ fIanged or Butt weIding end for piping fIexibiIity.

F

Yoke sIeeve

Fumished in aluminum bronze to reduce operating torque.Most size furnished with ball bearing yoke sleeves.

G

Lantern Ring and
DoubIe Packing set

Lantern ring with leak off fitting connection and double packing stack is optionally available for critical services.

H

Body-to-
Bonnet joint

A flat face gasket joint is used in the150Lb valves.A male and female joint is used in 300Lb to 600Lb valves.Ring joint is used in the body to bonnet connection in 900Lb higher rated valves.

I

Stem

Tplug disc is stem guided on all size.Disc has a differentialangle.front.the seat.to providea line contact for maximum seating.The bottom of v-port disc is fuided by the body seat ring for maximum disc stability in throttling applications，the soft teflon ring is excellentfor lower temperature service where tight shut off required.

J

Disc

Separate heavy duty，full ported rings for easy maintenance Screwed or welded connection into body

B

BC

Bolted cover.welded cover and pressure seal bonnet in services requiring frequtnt cycling or with high pressure/temperature variations.

C

End
Connections

A choice of Flanged,RTJ flanged or Butt welding end for piping flexibility.

D

Body-to-
Bonnet joint

A male and female joint or tongue and groove joint is used 150Lb to 600Lb valves.Ring joint is used in the body to cover connection in 900Lb＆higher rated valves

E

End Connections

All extemal hinge pin swing check valves 12“and smaller are availble with an optional outside lever and weight,internal hinge available with all swing check valves.

F

Seat Rings

Seoarate heavy duty,full ported rings for easy maintenance.Screwed or welded connection into body.

G

HCU

This design can be used to either dampen or assist closing of the check valve disc depending on orientation.by using the hydraulic control unit to buffer action the disc,the valve opens at lower flow rates.