Knife Gate Valve

Product variants

Stainless Steel Knife Gate Valve

Size Range： 1.5’’-16’’/DN40-400
Pressure： PN1.0/1.6mpa
Body Materials： cast iron/ductile iron
Seat Materials： NBR
Disc Materials： 201stainless steel
Stem Materials： 2cr13stainless steel

INTRODUCTION
Features:

Medium used: Pulp, mud, sewage, powder, all kinds of liquid fluid.
Suitable temperature：below 80 degrees Celsius
Application field：Water treatment, water supply and drainage, water conservancy projects.
 
Product advantages:

1.Zero leakage
Unibody casting process is adopted. The inner groove of the valve body is lined with U rubber sealing strip, which is tightly sealed with the edge of the valve plate.

2.No blocking by the slag
There are no grooves at the bottom, making the flow of the fluid medium easy to plug.

3.More durable
Sealing strip design makes valve more durable.

4.Easy to install and disassemble
Small volume, smooth passage, small flow resistance, light weight, easy to install, easy to disassemble

 
DATA
DN L D D0 H
40 48 84 180 288
50 48 99 180 290
65 48 118 200 310
80 51 132 220 350
100 51 156 240 405
125 57 184 260 450
150 57 212 280 510
200 70 266 300 610
250 70 319 340 765
300 76 370 380 820
350 76 430 400 970
400 89 480 450 1024

Lugged Knife Gate Valve

Size Range： 2”-16”/DN50-DN400
Pressure： PN1.0/1.6mpa
Body Materials： carbon steel/304 stainless steel/316 stainless steel
Seat Materials: 2cr13stainless steel
Disc Materials: 304stainless steel
Stem Materials: 2cr13stainless steel

INTRODUCTION

Features
Medium used: syrup, pulp, sewage, coal slurry, ash, slag water mixture.
Suitable temperature：below 80 degrees Celsius
Application field：municipal construction, water treatment, power, water supply and drainage, water conservancy projects.

Product advantages
1.Stainless steel parts
The inner parts are made of stainless steel to ensure the purity of the medium.
2.Long service life
It overcomes the defect that the traditional valve is easy to rust and corrode, and extends the service life.
3.Reliable, hygienic and anti-corrosion
The inner and outer surface of valve body, cover, battening and connecting plate is sprayed with epoxy resin.
4.Good performance
valve stem material is stainless steel, the valve stem thread is rolled, the performance is excellent.
5.Simple and compact structure
It is characterized by simple and compact structure, reasonable design, reliable sealing, lightweight material and flexible operation.
6.Easy to install and disassemble
Small volume, smooth passage, small flow resistance, light weight, easy to install, easy to disassemble

 
DATA
DN(mm) L D0 H1
50 48 180 295
65 48 200 315
80 51 220 360
100 51 240 400
125 57 260 450
150 57 280 510
200 70 300 585
250 70 340 695
300 76 380 795
350 76 400 950
400 89 450 1000

Flanged Knife Gate Valve

Size Range: DN50-DN300
Pressure: PN10/16/150LB
Body Materials: WCB
Seat Materials: EPDM
Disc Materials: 304/316
Stem Materials: 2Cr13

INTRODUCTION
Knife gate valve is also known as knife gate valve, slurry valve, mud valve. Its opening and closing parts are gate. The movement direction of gate is perpendicular to the direction of the fluid. Depending on cutting fiber material blade shaped gate to cut off the medium. The gate board rises and falls in the side guide groove and is pressed on the seat by the bottom lug. If high medium sealing is needed, o-type sealing seat can be selected to achieve two-way sealing. Knife gate valves have small installation space, low working pressure, long service life, simple maintenance.

Suitable Medium：Fresh water, sewage, sea water, acid, etc.

Working Temperature: -20℃～120℃

Application field：Municipal construction, water conservancy projects, oil products, water supply and drainage, water treatment.

Product Advantages

1. Precision casting valve body, fine appearance, no sand hole, traceable with Heat number.

2. Valve wedge is burnished smoothly 3 times and polished 5 times to ensure the sealing porformance.

3. Valve stem is equipped with bearing to reduce friction, increased service life.

4. Add steel wire to seat ring to ensure the strong conbation between valve seat and body.

5. 250 μm epoxy coating, it can effectively prevent corrosion and rust. 

6. Each valve will be made pressure test before leaving factory.

 
DATA
Name 1-Body 2-Seat 3-Wedge 4-Stem 5-Handwheel
Material WCB/304/316 EPDM 304/316 2Cr13 DI

 

Size   PN10 PN16 150LB
DN NPS（Inch） L D1 N-M Z-φC D1 N-M Z-φC D1 N-M Z-φC
50  2” 50 125 2-M16 2-φ18 125 2-M16 2-φ18 120.7 2-M16 2-19
65  2  1/2” 50 145 2-M16 2-φ18 145 2-M16 2-φ18 139.7 2-M16 2-19
80  3” 50 160 2-M16 6-φ18 160 2-M16 6-φ18 152.4 2-M16 2-19
100  4” 52 180 2-M16 6-φ18 180 2-M16 6-φ18 190.5 2-M16 6-19
125  5” 56 210 2-M16 6-φ18 210 2-M16 6-φ18 215.9 2-M20 6-22
150  6” 56 240 2-M20 6-φ22 240 2-M20 6-φ22 241.3 2-M20 6-22
200  8” 60 295 2-M20 6-φ22 295 4-M20 8-φ22 298.4 2-M20 6-22
250  10” 78 350 4-M20 8-φ22 355 4-M24 8-φ26 361.9 4-M22 8-25
300  12” 78 400 4-M20 8-φ22 410 4-M24 8-φ26 431.8 4-M22 8-25