Pentair Südmo Hygienic Butterfly Valves F250/F251

Pentair Keystone Butterfly Valves F250 F251

• F250 for inch OD tubing
• F251 for metric tubing

Pentair Hygienic Butterfly Valves F250/F251 are used in all segments of hygienic applications.

Our comprehensive shut-off valve line features both manual and pneumatic drive options, including lockable handles and vertical actuators.

General Application

A universal valve for isolation and control, in the food, dairy, brewing, pharmaceutical, beverage and chemical industries. The F250 and F251 are designed to be easily automated with any of PENTAIR’s actuators and controls.

From the F257 Vertical actuator and F783E Electronic control top, to the F79E/U or F79S Actuator.

Benefits

  • Maintenance friendly.
  • Site repairable.
  • Quarter turn operation.
  • Full range of optional accessories.

Features

  •  Quarter turn operation
  • Isolation or regulation control
  • Equal percentage characteristics
  • Bi-directional capability
  • Fully machined 316L stainless steel body
  • Optional end connections
  • One-piece disc and stem assembly
  • High Cv slim profile disc
  • Integral valve position indicator
  • High grade seat material options
  • Combination dual or multi position handle assembly
  • High impact reinforced polymer handle with a stainless steel drive (full stainless steel option available)
  • Integral padlocking as standard on manual valves
  • Maintenance friendly
  • Site repairable
  • Full range of optional accessories

Functional description

Südmo Hygienic Butterfly Valves can be operated either by a manual handle or remotely controlled by an automated pneumatic actuator. The manual version comes standard with a dual/multiposition handle notch plate, which can be easily reconfigured to suit the specific installation by being positioned in any of the four operating quadrants, and also is supplied standard with a padlock facility.

The automated version valve can be supplied in three configurations, Spring to Close (STC), Spring to Open (STO) or Double acting (DA).

Technical data

Max. product pressure at 20°C: 10bar (1000kPa)

Min. product pressure at 20°C: Full vacuum

Recommended operating pressure at 20°C: 6bar (600kPa)

Recommended temperature range: -5°C to 95°C

Pentair Keystone Butterfly Valves F250 F251 Technical

Product Information

Pentair Keystone Butterfly Valves F250-251 Product Information

Parts List

No. Description Material Standard
1 Body 316L (or 304L) stainless steel ASTM A276 (or A182)
2 Disc stem 316L stainless steel ASTM A743 CF8M
3 Seat VMQ (white) FDA
EPDM (black) FDA
NBR (black) FDA
HNBR (black) FDA
FKM (red) FDA
4 Handle assembly High impact glass reinforced polymer or 304 stainless steel
5 Handle plug/Screw TPR / 304 stainless steel Commercial
6 Notch plate 304 stainless steel ASTM A743 CF8
7 Body fasteners 304 stainless steel ASTM A276
8 Bearings PVDF Commercial

Technical Data

Max static temperature
VMQ 150°C
EPDM 120°C
NBR 100°C
HNBR 150°C
FKM 150°C

NOTE: Although the various seat materials available can withstand temperatures above the max. recommended operating temperature for short periods of time, such as for sterilisation and certain applications, the servicability of these seats at elevated temperatures does vary depending on the media, pressure and other variables. Therefore, this is best determined from experience gained with the application concerned.

Pentair Keystone Butterfly Valves F250-251 Product Information 2

F250 Inch OD Valve Dimensions (mm)

Valve size
DN Inch OD ØA1 ØA2 ØB C D E F PCD No. holes Hole dia. Stem conn. Mass (kg) Kv (Fully open)
25 1.0” 22.3 25.4 69 83.5 50 156 26.5 59 4 6 8 x 8 0.7 17
40 1.5” 35.0 38.1 79 88.5 50 156 31.5 69 4 6 8 x 8 0.8 64
50 2.0” 47.7 50.8 94 96.0 50 156 38.0 84 4 6 8 x 8 1.1 131
65 2.5” 60.4 63.5 104 101 50 156 43.0 95 4 6 8 x 8 1.5 220
80 3.0” 73.1 76.2 124 112.0 60 185 50.0 111 4 8 10 x 10 2.0 333
100 4.0” 98.0 101.6 151 125.5 70 185 63.5 139 6 8 12 x 12 3.3 726
125 5.0” 123.0 127.0 198 171.0 71 266 90.4 177 6 10 15 x 15 7.5 1370
150 6.0” 148.4 152.4 223 183.5 80 266 98.5 207 6 10 15 x 15 8.2 2050

 

F251 Metric Valve Dimensions (mm)

Valve size
DN Metric ØA1 ØA2 ØB C D E F PCD No. holes Hole dia. Stem conn. Mass (kg) Kv (Fully open)
25 25 26 29 74 86.0 50 156 29.0 63 4 6 8 x 8 0.8 19
32 32 32 35 79 88.5 50 156 31.5 69 4 6 8 x 8 0.7 41
40 40 38 41 87 92.5 50 156 35.5 76 4 6 8 x 8 0.9 69
50 50 50 54 99 98.5 50 156 40.5 89 4 6 8 x 8 1.4 137
65 65 66 70 123 111.5 50 185 49.5 109 4 8 10 x 10 2.5 263
80 80 81 85 138 119.0 54 185 57.0 124 4 8 10 x 10 3.0 381
100 100 100 104 158 129.0 54 185 67.0 144 6 8 12 x 12 4.5 689
125 125 125 129 198 171.0 74 266 90.4 177 6 10 15 x 15 7.5 1370
150 150 150 154 223 183.5 80 266 99.5 203 6 10 15 x 15 8.2 2050

NOTE: Dimensions ‘D’ and ‘A2’ shown above, are for the butt weld configuration only. For other types of connections, refer to the following end connection data. Dimension ‘E’ is the maximum clearance length for either handle. Masses shown are for bare shafted butt weld valves only.

F250 Inch OD Valves – Available End Connections

Pentair Keystone Butterfly Valve F250 Inch OD Available End Connections

Dimensions (mm)

D2 D3 D4
DN Inch OD ØA1 ØA2 ØA3 ØA4 ØA5 ØG1 ØG2 D1M* M* F* M* F* M* F*
25 1.0” 22.3 25.4 23.0 23.0 50.5 IDF 1” RJT 1” 25 40 46 40 50.5 40 37
40 1.5” 35.0 38.1 35.6 35.6 50.5 IDF 1 ½ ” RJT 1 ½” 25 40 46 40 50.5 40 37
50 2.0” 47.7 50.8 47.7 47.7 64.0 IDF 2” RJT 2” 25 40 46 40 50.5 40 37
65 2.5” 60.4 63.5 59.4 60.4 77.5 IDF 2 ½” RJT 2 ½” 25 50 46 50 50.5 40 37
80 3.0” 73.1 76.2 72.2 73.1 91.0 IDF 3” RJT 3” 30 50 51 46 55.5 40 42
100 4.0” 98.5 101.6 98.5 98.0 119.0 IDF 4” RJT 4” 35 52 64 52 60.5 46 50
125 5.0” 123.0 127.0 123.0 RJT 5” 35 62.5 58
150 6.0” 148.4 152.4 148.4 167.0 RJT 6” 40 65.5 55

NOTE: BSM modified version is available upon request, deduct 4.7 mm from dimension D3. *F Fabricated two piece body (Std.). *M Machined one piece body (on request). ** BPE is provided as Std. 1″ thru 4″ other sizes subject to enquiry.

Other Speciality Hygienic Butterfly Valve Options

F251 Metric Valves – Available End Connections

Pentair Keystone Butterfly Valve F251 Metric Available End Connections

Dimensions (mm)

D1 D2 D3 D4
DN Metric ØA1 ØA2 ØA3 Rd ØG M* F* M* F*
25 25 26 29 50.5 Rd 52 x ⅙” G 1” 25 37 53.5 34 34 46.0
32 32 32 35 50.5 Rd 58 x ⅙” G 1¼” 25 37 56.5 34 34 46.0
40 40 38 41 50.5 Rd 65 x ⅙” G 1½” 25 37 57.5 34 34 46.0
50 50 50 54 64.0 Rd 78 x ⅙” G 2” 25 37 59.5 34 34 46.0
65 65 66 70 91.0 Rd 95 x ⅙” G 2½” 25 41 64.5 37 37 52.5
80 80 81 85 106.0 Rd 110 x ¼” G 3” 27 45 66.5 41 41 54.5
100 100 100 104 119.0 Rd 130 x ¼” G 4” 27 45 80.5 41 41 54.5
125 125 125 129 155.0 Rd 160 x ¼” 37 58 82.5 50 50 64.5
150 150 150 154 183.0 Rd 190 x ¼” 40 66 89.5 55 55 64.5

NOTE: M* = Machined 1 piece body (Standard). F* = Fabricated 2 piece body (May apply for Imperalised DIN thread or other special cases)

Other Speciality Hygienic Butterfly Valve Options

 

F250 Pressure Drop / Flow Rates Graph

Pentair Keystone Butterfly Valves F250 Pressure Drop Flow Rates Graph

NOTE: This chart is based on a F250 valve fully open, using water at 20°C.

 

F251 Pressure Drop / Flow Rates Graph

Pentair Keystone Butterfly Valves F251 Pressure Drop Flow Rates Graph

NOTE: This chart is based on a F251 valve fully open, using water at 20°C.

Selection Guide

Pentair Keystone Butterfly Valves F250 F251 Selection Guide