Knife Gate Valve

Series SG73-A

DN
50~2400 (2"~96")
PN
0.6~1.6 (Class150)
Temperature Range
-20°C~110°C
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Knife Gate Valve

Series SG73-A

Specifications

Knife Gate Valve - Series SG73-A

DN
50~2400 (2"~96")
PN
0.6~1.6 (Class150)
Temperature Range
-20°C~110°C
Connection
Wafer
Installation Direction
Bidirectional
Design
JB/T8691, API609
Face to Face
GB/T15188
Flange Drilling
GB/T9113, ASME B16.5, EN1092, GOST12820, GOST33259, DIN2501
Top connection
ISO5211, GOST55510
Inspection
GB/T13927, ISO5028, API598, JB/T9092
Body Materials
GGG40, CF8, CF8M, 321, 316Ti, 904L, 310S
Disc Materials
304, 316, 304L, 316L, 321, 316Ti, 904L, 310S, Duplex Stainless Steel
Stem Materials
420, 431, 304, 316, 316L, 321
Seat Materials
EPDM, NBR, NR, SBR, Viton, MVQ

Features & Benefits

SG73-A is one-piece structure, and its economical semi-lug cast body design offers durable performance in applications ranging from general purpose to severe mediums. Available with replaceable soft seat, these series are easily automated for on/off applications.

  • A. Handwheel

    The ductile iron handwheel is more durable. The right size makes the handwheel rotate more labor-saving.

  • B. Bearing

    Bearing can be selected for the big size of knife gate valve to reduce the opening & closing torque.

  • C. Stem

    Different materials can be selected according to the working conditions. Hardness and corrosion resistance are the primary considerations.

  • D. Stem Nut

    The stem nut is designed for the non-rising stem, and the opening and closing of the valve is not limited by space. It is the connection point between the stem and disc, so its wear resistance and corrosion resistance are the primary factors for material selection.

  • E. Disc

    The polishing and chamfering design of the disc does not damage the seat. Different materials can be selected according to the medium.

  • F. Packing

    Rubber and nylon packing material can effectively enhance the sealing between the gland and disc. Different materials can be selected according to the medium.

  • G. Seat

    U-shaped valve seat is bidirectionally sealed, and can be replaced in case of damage. Different materials can be selected according to the medium.

  • H. Body

    The body is one-piece structure with wafer or lug style. Polyester is coated for excellent corrosion resistance. Shorter length greatly reduces production and maintenance costs of the valve.

  • I. O Ring

    Both-side O ring design makes the valve suitable for most of flanges in the market, easy to install, and greatly reduces the leakage between the valve and the mating flanges.

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