4MAX-SERIES-20 -WAFER SEMI LUG STYLE KNIFE GATE VALVE

The 4MAX(SER-20) model knife gate valve is a uni-directional valve designed for general industrial service applications. The design of the body and seat assures non-clogging shut off on suspended solid in industries such as:

  • Pulp and Paper
  • Power Plants
  • Wastewater Treatment Plants
  • Chemical Plants
  • Food and Beverage
  • Bulk Handling
  • Mining

Size Range : DN 50 to DN 1200 (larger diameters on-request)

knife gate valve exporter

Working pressure:

DN 50mm to DN 250mm 10 bar
DN 300mm to DN 400mm 6 bar
DN 450mm 5 bar
DN 500mm to DN 600mm 4 bar
DN 700mm to DN 1200mm 2 bar

Working pressure:

DIN PN 10 and ANSI B16.5 (class 150)
Other range connections available on request
DIN PN 6 DIN PN 16 DIN PN 25
BS Table “D” and “E” ANSI 125

All valves are tested prior to shipping in accordance with the standard developed by the Quality Control Department.

STANDARD PARTS LIST
No. Part Material Qty.
1 Body ASTM A 536 GR.65-45-12 1
2 Gate S.S. 304/316/316L 1
3 Seat Metal To Metal Or EPDM 1
4 Gland Packing Gasket PTFE Impregnated Synthetic Fiber/Graphite 2
5 Gland Aluminum/ASTM a 536 Gr. 65-45-12 1
6 Stem S.S. 304/316/316L 1
7 Sleeve Brass 1
8 Bracket M.S/S.S 1
9 Ring S.S. 1
10 Hand Wheel C.I/S.G.I. 1
11 Bush For Pipe Plastic/Nylon 1
12 Pipe M.S. 1
13 Washer Brass 1
14 Sleeve Lock Nut M.S/S.S 1
Knife_Gate_Valves-1
knife gate valves manufacturers

TEMPERATURE CHART

Material Max.T (_ºF) (_ºC) Applications
Metal/Metal >482 >250 High temp./Low tightness
EPDM (E) 248 120 Acids and non mineral oils
Nitrile (N) 248 120 Resistance to petroleum products
Viton (V) 392 200 Chemical service/High temp.
Silicone (S) 482 250 Food service/High temp.
PTFE (T) 482 250 Corrosion resistance

-> More details and other materials on request

STANDARD PARTS LIST
Material Max.T (_ºF) (_ºC) pH
Dry cotton (AS) 122 50 6 – 8
PTFE impregn. synth. fibre (ST) 464 240 2 – 13
Braided PTFE (TH) 500 260 0 – 14
Graphited (GR) 1112 600 0 – 14
Ceramic fibre (FC) 2192 1200

NOTE : all types include an elastomere O-ring (same material as seal), excluding TH, GR and FC.

SEAT TYPES

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RESILIENT TYPE “A”

  • Standard resilient seat.
  • Temperature limitations according to the selected seat material. Review the above chart or contact our Technical Department for more information.
  • Seat with replaceable retainer ring.

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METAL/METAL

For applications with:

  • High temperature
  • High density media application
  • In those cases when full tightness is not required

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TYPE “B” SEAT (resilient)

  • Temperature limitations according to the selected seat material. Review the above chart or contact our Technical Department for more information.
  • Replaceable and reinforced seat ring available in different materials such as: stainless steel, CA1 5, Ni Hard,…

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TYPE “B” SEAT (metal/metal) For applications with:

  • High temperature
  • High density media application
  • In those cases when full tightness is not required
  • Replaceable design without disassembling the valve

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DEFLECTION CONE “C”

  • Deflects the media away from any valve internal exposed parts (gate, seat, .)
  • Material : AISI 316, CA15, Ni-Hard,
  • Face-to-face dimension increases: DN 50 to DN 250 X = 9mm , DN 300 to DN 600 X = 12mm, Larger diameters on request

HANDWHEEL (Rising Stem)

Standard manual actuator
• Consists of :
– Handwheel : Epoxy coated Cast Iron
– Stem
– Stem nut
– Stem protector
• Available from DN 50 to DN 1000
Options :
– Locking Device
– Extensions

SEAT-6
DN (mm/inch) A B C D E F ØG H Weight (kg.)
50 (2″) 40 119 100 105 129 47 225 420 7
65 (2.1/2″) 40 134 100 115 146 47 225 450 8
80 (3″) 50 149 100 124 162 47 225 475 9
100 (4″) 50 169 100 140 187 47 225 520 11
125 (5″) 50 180 100 150 211 47 225 600 15
150 (6″) 60 210 100 175 237 47 225 652 18
200 (8″) 60 262 119 205 309 67 310 822 30
250 (10″) 70 318 122 250 364 67 310 1022 44
300 (12″) 70 372 122 300 414 67 310 1122 58
350 (14″) 96 431 197 338 486 66 410 1323 96
400 (16′) 100 486 197 392 536 66 410 1427 124
450 (18″) 106 540 201 432 588 66 550 1594 168
500 (20″) 110 602 201 485 648 66 550 1707 192
600 (24″) 110 708 201 590 748 66 550 2022 245
700 (28″) 110 834 380 686 890 74 800 2778 405
750 (30″) 110 884 380 760 945 74 800 2900 455
800 (32″) 110 1015 320 791 989 74 800 2980 512
900 (36″) 110 1040 320 895 1118 74 800 3215 680
1000 (40″) 110 1146 320 975 1220 74 800 3400 865
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