Combustion Valve - Series: 22

Size: 2" thru 14" for 125/150 lb. Flanging
Maximum Operating Temperature: Maximum design temperature to 900°F
Maximum Differential: 1 psig.
Maximum Containment: 25 psig

Design Standard

The PDC Series 22 Combustion Valve is a cost effective, manual, wafer style butterfly valve designed for use in low pressure, low cycle (“set -and-forget”) applications. It is designed for use in temperatures up to 900°F Maximum with differential pressures not to exceed 1 PSIG. The valve is designed with appropriate clearances in the disc for combustion installations. These applications are typically :”Hot” or “Cold” lines of air or combustible gases that require High-Low or Modulating flow control.

Specifications

Size Range:
2" thru 14" for 125/150 lb. Flanging
Pressure Rating:
2 PSI (.1 Bar) max
Shutoff Rating:
ANSI Class II
Body Style:
Wafer

Design Features

  • Lightweight, solid ring, wafer design for ease of installation. Four holes to insure proper alignment without transfer of pipe stresses to the valve body.
  • PDC’s Combination 10 Position/Infinite Throttling & Locking Lever Assembly offers both types of the most commonly requested manual actuators in one unit.
  • Adjustable packing – Graphited TEFLON ® Braid for “Cold” (up to 450°F) applications – Graphited Glass Yarn Reinforced with Inconel Wire for “Hot” ( up to 900°F) applications.
  • Valves can be repacked without removal from the line.
  • Inboard bronze bushing on “Cold” (up to 450°F) applications and “metallized” carbon bushing on “Hot” (up to 900°F) applications are designed for long life, nonfreezing, low torque characteristics.

Applications

  • Blower Equipment
  • Compressor Equipment
  • Boiler Equipment
  • Environmental Systems
  • V.A.C
  • Industrial Process Furnaces
  • Oil Gas/Refining
  • Power Generation/Co-Generation
  • Water & Sewage
  • Stationary Engines
  • Chemical Equipment
  • Mining Equipment
  • Gas Recovery Systems

Standard Materials and Seat Construction

 Cold (450°)Hot (900°)
Body:Cast IronCast Iron
Disc:Carbon IronCarbon Iron
Shaft:416 Stainless Steel316 Stainless Steel
Seat:Swing-thru, Paddle DiscSwing-thru, Paddle Disc
Bushing:Graphited BronzeMetallized Carbon
Packing:Graphited TeflonGraphited Yarn Reinforced with Iconoly
Packing Nut:Brass316 Stainless Steel

Optional Materials and Seat Construction

Body:Cast Iron
Disc:Cast Iron
Shaft:316 Stainless Steel
Seat:Swing-thru
Bushing:Metcar
Packing:High Temp Packing
Packing Nut:316 Stainless Steel
  1. Valve Body
  2. Valve Disc
  3. Power End Shaft
  4. Inboard Bushing
  5. Packing
  6. Packing Nut
  7. Pin
  8. Pipe plug

Chart or Graph

Dimensions

VALVE SIZEValve Related Dimensions
Assembly NumberABCDE
2”

221-017-000-ZZ

2

2-3/4

5-3/8

1-1/2

3-7/8

2.5”

221-027-000-ZZ

2-1/2

3

5-5/8

1-1/2

4-5/8

3”

221-037-000-ZZ

3

3-1/8

5-7/8

1-1/2

5-1/4

4”

221-047-000-ZZ

4

4-1/4

6-3/8

1-1/2

6-3/8

5”

221-057-000-ZZ

5

4-7/8

6-7/8

1-1/2

7-1/2

6”

221-067-000-ZZ

6

5-3/8

7-3/8

1-1/2

8-9/16

8”

221-077-000-ZZ

8

6-1/2

8-3/8

1-1/2

10-3/4

10”

221-087-000-ZZ

10

8

10-5/8

1-7/8

13

12”

221-097-000-ZZ

12

9-1/2

11-5/8

1-7/8

15-1/4

14”

221-107-000-ZZ

13-1/8

10-1/2

12-1/8

1-7/8

16-3/8

Cv Values

(Flow in GPM of 60°F water at 1 psi pressure drop, specific gravity=1)

VALVE SIZEDISC ANGLE, DEGREES
102030405060708090
2”2512213651678795
2.5”4821365988132187204
3”615325489139212293389
4”142957103167270411578784
5”2245921662784506689591,336
6”32661322394016641,0031,4392,099
8”561172364267141,1811,7832,7214,046
10”871833696671,1161,8472,7884,2556,679
12”1262655319601,6082,6604,0176,1279,622
14”1503176361,1511,9273,1874,8137,34211,530

Materials of Construction

 450° F Service900° F Service
 ComponentsZZ=00ZZ=28
Body:Cast IronCast Iron
Disc:Carbon IronCarbon Iron
Shaft:416 Stainless Steel316 Stainless Steel
Bushing:Graphited BronzeMetcar
Packing:Graphited TeflonHigh Tempaerature
Packing Nut:Brass316 Stainless Steel