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Medium Duty - Series: 01

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Medium Duty - Series: 01

Size:2" thru 14", 16" thru 24"

Operating Temperature:To 450°F with standard materials.
To 900°F with optional materials.

Design Standard

The PDC “Medium Duty” series butterfly valve is available in sizes from 2″ thru 24″ in a combination of materials and optional features suitable for most mid-range differential pressures and service conditions.

Specifications

Size Range:

2" thru 14", 16" thru 24"

Temperature:

To 450°F with standard materials.
To 900°F with optional materials.

Pressure Rating:

Varies with size. See Econotrol Series 09 Brochure

Shutoff Rating:

ANSI Class II

Body Style:

Wafer

Design Features

  • Inboard bushings of graphited bronze for long life, non-freezing, low torque characteristics.
  • Close tolerance machining for minimal leakage and dependable flow characteristics.
  • Adjustable packing-Graphited TEFLON ® Braid. Valves can be repacked without removal from line.
  • Rugged mounting pads drilled and tapped for ease of installing actuating equipment and accessories.
  • Rugged mounting pads drilled and tapped for ease of installing actuating equipment and accessories.
  • Flatted, keywayed or hexed ends on shafts are available to facilitate factory or field mounting of all types of actuating equipment.
  • Lightweight, solid ring, wafer design for ease of installation. Four holes to insure proper alignment without transfer of pipe stresses to the valve body.

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

  2″ – 14″ 16″ – 24″
Body: Cast Iron Cast Iron
Disc: Cast Iron Ductile Iron
Shaft: 416 Stainless Steel 416 Stainless Steel
Seat: Swing-thru Swing-thru
Bushing: Graphited Bronze Bronze
Packing: Graphited Teflon Braid Graphited Teflon Braid
Packing Nut: Brass Brass

Optional Materials and Seat Construction

Body: High Temperature Iron, Carbon Steel, 316 Stainless Steel, 304 Stainless Steel
Disc: High Temperature Iron, Carbon Steel, 316 Stainless Steel, 304 Stainless Steel
Shaft: 316 Stainless Steel, 304 Stainless Steel, Incoloy, Monel
Seat: Angle (2″- 24″), Metal Step (2″- 24″), Tadpole Step (6″- 24″)
Bushing: 316 Stainless Steel, 304 Stainless Steel, Glass Filled Teflon, Metcar
Packing: High Temperature Braid, Pure Teflon Braid, Teflon V-Ring
Packing Nut: 316 Stainless Steel

Medium Duty 2″ Through 14″ Valve size

  1. Body
  2. Disc
  3. Power Shaft
  4. Idle Shaft
  5. Bushing
  6. Braided Packing
  7. Packing Nut
  8. Shaft Retaining Pin

16″ – 24″ Valve size

  1. Valve Body
  2. Valve Disc
  3. Power End Shaft
  4. Idle End Shaft
  5. Inboard Bushing
  6. Braided Packing (can be maintenanced in line)
  7. Packing Nut
  8. Shaft Retaining Pin
  9. Pipe Plug (sealed)

Chart or Graph

*Torque, Lb-In/PSI, Required for PDC swing thru valves with disc in closed position for temperatures up to 450 degrees F

*Below Torques only apply to normal clean service conditions

VALVE SIZE PRESSURE DROP ACROSS DISC IN CLOSED POSITION, PSI
  0.5 1 5 10 15 20 25 30 40 50 60 70 80 90 100 125 150
2 50 50 52 53 55 56 58 59 62 65 68 71 74 77 80 88 95
2.5 50 51 53 55 58 60 63 65 70 75 80 85 90 95 100 113 125
3 50 51 54 57 61 64 68 71 78 85 92 99 108 113 120 138 155
4 51 52 59 67 78 84 93 101 118 135 152 169 188 203 220 263 –
5 51 53 63 75 88 100 113 125 150 175 200 225 250 275 300 – –
6 52 54 69 88 107 126 145 164 202 240 278 316 354 – – – –
8 124 128 158 195 233 270 308 345 420 495 570 645 720 795 – – –
VALVE SIZE PRESSURE DROP ACROSS DISC IN CLOSED POSITION, PSI
  0.5 1 3 5 8 10 13 15 20 25 30 35 40 45 50 60 70
10 129 137 171 205 256 290 341 375 460 545 630 715 800 885 970 1140 1310
12 132 143 189 235 304 350 419 465 580 695 810 925 1040 1155 1270 – –
14 139 157 231 305 416 490 601 675 860 1045 1230 – – – – – –
16 223 245 335 425 560 650 785 875 1100 1325 1550 1775 2000 – – – –
18 235 270 410 550 760 900 1100 1250 1600 1950 2300 2650 – – – – –
VALVE SIZE PRESSURE DROP ACROSS DISC IN CLOSED POSITION, PSI
  0.5 1 2 4 5 7 9 10 12 14 15 17 19 20 22 24 25
20 245 290 380 580 650 830 1010 1100 1280 1460 1550 1730 1910 2000 2180 2380 2450
22 261 322 444 688 810 1054 1298 1420 1664 1908 2030 2274 2518 2640 – – –
24 280 359 518 836 995 1313 1631 1790 2108 2426 2585 2903 – – – – –

Typical Dimensions: 4″ thru 14″

SIZE A B C D E F H Max ΔP Approx wt (Lb.)
2 2 3-7/8 5-3/8 1-1/2 3-7/8 4-1/4 1/2 150 9
2-1/2 2-1/2 4-1/8 5-5/8 1-1/2 4-5/8 4-1/4 1/2 150 10
3 3 4-3/8 5-7/8 1-1/2 5-1/8 4-1/4 1/2 150 11
4 4 4-7/8 6-3/8 1-1/2 6-3/8 4-1/4 1/2 125 12
5 5 5-3/8 6-7/8 1-1/2 7-1/2 4-1/4 1/2 100 15
6 6 5-7/8 7-3/8 1-1/2 8-1/2 4-1/4 1/2 80 17
8 8 7-3/4 9-5/8 1-7/8 10-3/4 5-1/8 3/4 90 32
10 10 8-3/4 10-5/8 1-7/8 13 5-1/8 3/4 70 40
12 12 9-3/4 11-5/8 1-7/8 15-1/4 5-1/8 3/4 50 50
14 13-1/8 10-1/2 12-1/8 1-7/8 16-3/8 5-1/8 3/4 30 70

Typical Dimensions: 16″ thru 24″

Size (inch) A B C D E F H Max ΔP Approx wt (Lb.)
16 2 12-3/4 14-1/2 2-3/8 18-1/4 5-1/8 1 40 122
18 17-1/8 13-7/8 15-1/2 2-3/8 20-3/4 5-1/8 1 30 155
20 19-1/8 14-7/8 16-1/2 2-3/8 22-3/4 5-1/8 1 25 192
22 21-1/8 16-1/2 17-1/2 2-3/8 25 5-1/8 1 20 232
24 23-1/8 17-1/4 18-1/2 2-3/8 27 5-1/8 1 17 276

* “G” Length and configuration of the shaft end will vary to accommodate specific actuators. Refer to the accessory section for typical flatted, keywayed, and hexed end configurations available.

MAX. ∆P is based on 0° disc position, using standard materials of construction at a maximum temperature of 450° Fahrenheit.Consult factory for MAX. ∆P for elevated temperatures.

*Also Available in RPM Drilling in Most Sizes: Consult Factory

Cv Values for PDC Swing Thru Butterfly Valves

By definition, Cv is the flow coefficient of a control device or flow restriction. Cv is defined as the number of US gallons of 60°F water per minute which will flow through the given restriction with a one pound per square inch pressure drop.

Cv Values

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

VALVE SIZE Disc Angle, Degress
  10 20 30 40 50 60 70 80 90
2 2 5 11 20 34 49 64 83 90
2.5 4 8 20 34 56 84 126 178 194
3 6 14 30 51 85 132 202 279 370
4 13 28 54 98 159 257 391 550 747
5 21 43 88 158 265 429 636 913 1272
6 30 63 126 228 382 632 955 1370 1999
8 53 111 225 406 680 1125 11698 2591 3853
10 83 174 351 635 1063 1759 2655 4052 6361
12 120 252 506 914 1531 2533 3826 5835 9164
14 143 302 606 1096 1835 3055 4584 6992 10981
16 191 400 805 1455 2436 4118 6388 9835 12266
18 244 513 1032 1865 3123 5279 8185 12608 15273
20 305 640 1287 2326 3896 6584 10209 15725 19612
22 372 781 1570 2838 4753 8033 12456 19186 23929
24   936 1882 3401 5696 9626 14926 22990 28674

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