Design Options

SEATS

 STUFFING BOXES

Swing-Thru 
3%-5% Leakage
 or as required

Slant Angle
 (No seat) 
Higher CV

Step Seat for 1% Leakage or Machined for ANSI/FCI 70-2 Class III Shutoff

Standard.

No.

Qty.

Description

Material

A

1

STUFFING BOX

CS

B

1

GLAND FOLLOWER

CS

C

2

STUD

GRB7

D

2

SPRING

COMM

E

6

NUT

GR2H

F

2

FLAT WASHER

GR5

G

1

PACKING

COMM

H

4

BRANDED PACKING

COMM
Tadpole Seat
for ANSI/FCI 70-2
Class II
or Class III
 Shutoff

Inflatable Seal
 Ensures
 Gas-Tight Operation
 for Maximum 500°F

Rubber Lined Body
and Polished Disc Edge for Tight Shutoff
 up to 450°F.

Special Machined Disc
and Seat Profile for Tighter Shutoff

 

Step Seat Refractory Lined

 

  

 

 

Air Purge or Grease Fitting

No.

Qty.

Description

Material

A

1

STUFFING BOX

CS

B

1

GLAND FOLLOWER

CS

C

2

STUD

GRB7

D

2

SPRING

COMM

E

6

NUT

GR2H

F

2

FLAT WASHER

GR5

G

2

DIE FORMED PACKING

COMM

H

2

BRANDED PACKING

COMM

I

1

LANTERN RING

304SST

J

1

NPT AIR PURGE OR GREASE INLENT

COMM

BODY CONFIGURATIONS:
Round, Rectangular, Square or Obround

DISC TYPES:
Single Disc, Split Disc, Eccentric or Double Block and Bleed

SIZES:
2 inches to 144 inches or larger

 

Materials of Construction:

HIS can manufacture out of any weldable, castable or forgeable alloy. We have extensive experience in high temperature, erosive or corrosive gas flow.

Alloy

Recommended Use Temperature (deg. F)

A387, GR11, GR 22

800 - 1100

Corten A, A516 GR70

800 - 1100

304, 304H, 304L, 321, 347

800 - 1400

316, 316L, 309

800 - 1600

INCONELS

1000 - 1800

330,333,310,HR160

1600 - 2000

A297 GRHK, HR160

1600 - 2100

SUPERTHERM CERAMICS

1800 - 2300

CERAMICS, REFRACTORY

1800 - 3000
 

 

 

 

 

 

 

For Less than 5 Psi Service

NO.

QTY.

Description

Material

A

1

STUFFING BOX

CS

B

1

GLAND FOLLOWER

CS

C

1

INBOARD BEARING

CARBON

D

5

BRANDED PACKING

COMM