Pure-Flo®

MODULAR VALVE ASSEMBLIES
AIR TO OPEN—AIR TO CLOSE
SPRING TO OPEN—AIR TO CLOSE, FAIL OPEN
1 Bio-Tek Valve series 2 Buttweld is 3.50"
LIST OF PARTS 1/4"—2", DN 8—50
ITEM DESCRIPTION MATERIAL QUANTITY
1 Cover, Upper Actuator PAS, Cmpl with FDA Cfr #21 1
2 Cover, Lower Actuator PAS, Cmpl with FDA Cfr #21 1
3 Spindle, Valve S.S., ASTM A-582, Type 303 1
4 Diaphragm, Actuator Buna N 1
5 Plate, Actuator S.S. or Car Stl Nickel Pl. 2
6 Spindle, Indicating S.S., ASTM A-582, Type 303 1
7 Spring S.S., ASTM A-401 Nickel Pl. 1
8 Spring S.S., ASTM A-401 Nickel Pl. 1
9 “O” Ring* Viton, Cmpl with FDA Cfr #21 2
10 Body, Weir 1/4"–2" S.S., Forge, or Inv. Cast 1
11 Compressor S.S., C.I. Zinc or Bronze 1
12 Diaphragm, Elastomer* EPDM, Cmpl with FDA Cfr #21 1
13 Diaphragm, Plastic* TFE Cmpl with FDA Cfr #21 1
14 Cushion, Backing* EPDM, Cmpl with FDA Cfr #21 1
*Recommended spare parts
AIR TO OPEN—SPRING TO CLOSE, FAIL CLOSED
HEIGHT WITH ADAPTER SPOOL ADJUSTABLE OPENING STOP
DIMENSIONAL DATA
A B
VALVE SIZE VALVE WITH LIMIT C D E H
OPEN SWITCH, SP 2
Inch DN Inch mm Inch mm Inch mm Inch mm Inch mm Inch mm
.25,.375,.51 8,10,151 4.27 108 9.40 239 2.84 72 2.50 63 2.532 64 Consult Factory
0.50 15 4.89 124 9.93 252 3.34 85 3.00 76 3.50 89 6.39 162
0.75 20 5.93 150 10.92 277 4.56 116 3.88 98 4.00 101 7.38 187
1.00 25 6.55 166 11.35 288 4.56 116 3.88 98 4.50 114 7.94 202
1.50 40 10.62 270 14.97 380 6.41 163 5.94 151 5.50 140 11.86 301
2.00 50 11.39 289 15.41 391 6.41 163 5.94 151 6.25 159 12.56 319
33
ACTUATION