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Reduced Port - Series: 15

机器设备

MACHINERY

Reduced Port - Series: 15

Size:3" thru 14" for 125/150 lb. Flanging

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

Design Standard

The PDC “Reduced Port” series butterfly valve is available in sizes from 3″ thru 14″ in a combination of materials and optional features suitable for most mid-range differential pressures and service conditions.

Specifications

Size Range:

3" thru 14" for 125/150 lb. Flanging

Temperature:

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

Pressure Rating:

Varies with size. See Reduced Port 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.
  • 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

Body: Cast Iron
Disc: Cast Iron
Shaft: 416 Stainless Steel
Seat: Swing-thru
Bushing: Graphited Bronze
Packing: Graphited Teflon Braid
Packing Nut: 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 (3″-4″), Metal Step (3″-14″), Tadpole Step (8″-14″)
Bushing: 316 Stainless Steel, 304 Stainless Steel, Glass Filled Teflon, Metcar, Macor
Packing: High Temperature Braid, Pure Teflon Braid, Teflon V-Ring
Packing Nut: 316 Stainless Steel
  1. Body
  2. Disc
  3. Power Shaft
  4. Idle Shaft
  5. a. Bushing b. Bushing Extension
  6. Braided Packing
  7. Adjustable Packing Nut
  8. Shaft Retaining Pin

Chart or Graph

*Torque, Lb-In, Required for PDC Swing Thru Butterfly Valves with Disc in Closed Position for Temperatures up to 450° Fahrenheit

*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
3 x 2.5 50 51 53 55 58 60 63 65 70 75 80 85 90 95 100 113 125
4 x 3 50 51 54 57 61 64 68 71 78 85 92 99 106 113 120 138 155
5 x 4 51 52 59 67 76 84 93 101 118 135 152 169 186 203 220 263
6 x 5 51 53 63 75 88 100 113 125 150 175 200 225 250 275 300
8 x 6 52 54 69 88 107 126 145 164 202 240 278 316 354
10 x 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 x 12 129 137 171 205 256 290 341 375 460 545 630 715 800 885 970 1140 1310
14 x 12 132 143 189 235 304 350 419 465 580 695 810 925 1040 1155 1270

Typical Dimensions: 3″ thru 14″

Size (inch) A B C D E F H Max. ΔP Approx. Wt. (Lb)
3 x 2-1/2 2-1/2 4-3/8 5-7/8 1-1/2 5-1/4 4-1/4 1/2 150 12
4 x 3 3 4-7/8 6-3/8 1-1/2 6-1/4 4-1/4 1/2 150 15
5 x 4 4 5-3/8 6-7/8 1-1/2 7-3/8 4-1/4 1/2 125 20
6 x 5 5 5-7/8 7-3/8 1-1/2 8-1/2 4-1/4 1/2 100 27
8 x 6 6 7-3/4 9-5/8 1-7/8 10-3/4 5-1/8 3/4 80 60
10 x 8 8 8-3/4 10-5/8 1-7/8 13 5-1/8 3/4 90 65
12 x 10 10 9-1/2 11-5/8 1-7/8 15-1/4 5-1/8 3/4 70 80
14 x 12 12 10-1/2 12-1/8 1-7/8 16-3/8 5-1/8 3/4 50 86

* “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.

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
3 x 2.5 4 8 20 34 56 84 126 178 194
4 x 3 6 14 30 51 85 132 202 279 370
5 x 4 13 28 54 98 159 257 391 550 747
6 x 5 21 43 88 158 265 429 636 913 1272
8 x 6 30 63 126 228 382 632 955 1370 1999
10 x 8 53 111 225 406 680 1125 1698 2591 3853
12 x 10 83 174 351 635 1063 1759 2655 4052 6361
14 x 12 120 252 506 914 1531 2533 3826 5835 9164

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