DK series slurry valve
The slurry valve is a soft-seal, straight-stroke switch-off valve
that is aesthetically pleasing, lightweight, and compact for easy
installation and use. With full-diameter design, the flow
resistance is small, and gate disc is formed with the pipe when the
gate disc is opened. The drive mode can be manual, or the pneumatic
actuator can be equipped with an inductive switch for remote
control. The head of the gate disc is tapered and has a strong
cutting force. The seat is made of rubber and is integrally
die-casted to achieve two-way sealing. The biggest characteristic
of the valve is that when the valve is fully opened, the medium
will not enter the upper and lower valve chambers of the valve
body, thereby avoiding the accumulation of slurry in the valve body
cavity during use, which affects the use effect of the valve.
Design features
Gate disc
The head of the gate has a certain taper and has a strong cutting
force. After the gate is finely ground, it is treated with hard
chrome plating, which has strong wear resistance and corrosion
resistance.
Built-in stuffing box
The built-in stuffing box structure design makes it easier to
achieve the packing seal at this position, making maintenance
easier and faster.
Valve body
The valve body adopts a two-piece structure design. When the valve
body and the gate disc are assembled, the zero gap between the
valve body and the gate disc is realized, so that the particulate
medium is prevented from entering the valve cavity and blocking the
valve.
Seal seat
1. The rubber mold is die-cast and formed, and the valve seat
contains a metal support ring to prevent deformation during
long-term use.
2, Easy to install.It can be directly removed without the use of
auxiliary tools.
3. The seal seats can be interchanged.
4, the sealing seat material can be selected:
Nitrile rubber, temperature -29 ° C ~ 120 ° C
EPDM rubber, temperature -29 ° C ~ 120 ° C
Natural rubber, temperature -29 ° C ~ 70 ° C
Bottom with drain
The bottom of the valve has a detachable bottom cover. After the
valve is used for a period of time, the bottom cover can be removed
to clean the residual granular medium in the cavity.
Technical and performance parameters
1, Nominal diameter: DN50-DN600
2, Flange standard: GB/T9113.1, AMSEB16.5
3, Design standard: MSS SP-81.JB/T8691-1988
4, Structure length standard: MSS SP-81
5, Material standard: GB/T12230-2005 GB/T12229-2005
6, Working pressure: 0~10bar
7, Air pressure: 0.4~0.7MPa
8, Connection method: clip type
9, Working temperature: -29 ° C ~ 120 ° C
10, Applicable medium: pulp, mud, water
11, Leakage: zero leakage
Valve structure drawing and parts list
| No. | Item | Quantity(Piece) | Material |
| 1 | Upper valve body | 1 | WCB,CF8,CF8M |
| 2 | Lower valve body | 1 | WCB,CF8,CF8M |
| 3 | Valve seat | 2 | EPDM,NBR |
| 4 | Gate disc | 1 | 410,304,316,+Hard chrome plating |
| 5 | Packing | A group | PTFE wound packing |
| 6 | Packing gland | 1 | WCB,CF8,CF8M |
| 7 | Pin | 1 | 304 |
| 8 | Drive screw | 1 | 304 |
| 9 | Manual column | 4 | 304, 45#+Cr |
| 10 | Square seat | 1 | WCB,ZL108 |
| 11 | Transmission nut | 1 | H59 |
| 12 | Plane bearing | 2 | GCR6 |
| 13 | Flat key | 1 | 45# |
| 14 | Round nut | 2 | 45#+ Nickel plating |
| 15 | Hand wheel | 1 | WCB |
| 16 | Bottom cover | 1 | WCB,CF8,CF8M |
| 17 | Seal | 1 | NBR |
| 18 | Hex Bolts | Several | 304 |
| 19 | Sealing rope | 1 | NBR |
| 20 | Socket head cap screws | Several | 304 |
| 21 | Hex Bolts | Several | 304 |
| 22 | Hex nuts | Several | 304 |
| 23 | Stud | Several | 304 |
| 24 | Hex nuts | Several | 304 |
| 25 | Cotter pin | 1 | stainless steel |
| 26 | Hex nuts | Several | 304 |
Valve structure drawing and parts list
| No. | Item | Quantity(Piece) | Material |
| 1 | Upper valve body | 1 | WCB,CF8,CF8M |
| 2 | Lower valve body | 1 | WCB,CF8,CF8M |
| 3 | Valve seat | 3 | EPDM,NBR |
| 4 | Gate disc | 1 | 410,304,316,+ Hard chrome plating |
| 5 | Gate disc | A group | PTFE wound packing |
| 6 | Packing | 1 | WCB,CF8,CF8M |
| 7 | Connection pin | 1 | 304 |
| 8 | Cylinder shaft | 1 | 45#+Cr |
| 9 | Pneumatic column | 4 | 304, 45#+Cr |
| 10 | Lower cylinder cover | 1 | Q235,ZL108 |
| 11 | Cylinder | 1 | Aluminum alloy,Q235 |
| 12 | Double screw | Several | Q235+ Galvanized |
| 13 | Upper cylinder cover | 1 | Q235,ZL108 |
| 14 | Hex nuts | Several | 304 |
| 15 | Spring pad | Several | 65Mn |
| 16 | Bottom cover | 1 | WCB,CF8,CF8M |
| 17 | Sealing cap | 1 | NBR |
| 18 | Hex Bolts | Several | 304 |
| 19 | Sealing rope | 1 | NBR |
| 20 | Socket head cap screws | Several | 304 |
| 21 | Hex Bolts | Several | 304 |
| 22 | Hex nuts | Several | 304 |
| 23 | Stud | Several | 304 |
| 24 | Hex nuts | Several | 304 |
| 25 | Hex nuts | 2 | 304 |
| 26 | O-ring | 2 | NBR |
| 27 | Boundary lubrication bearing | 1 | Composite material |
| 28 | Y-ring | 1 | Polyurethane |
| 29 | O-ring | 4 | NBR |
| 30 | Guide tube | 1 | Reinforced PTFE |
| 21 | Piston | 1 | ZI108,Q235 |
| 32 | Hex Bolts | 1 | 45 |
| 33 | Spring pad | 1 | 65Mn |
| 34 | Seal | 1 | PTFE |
| 35 | Hex nuts | 1 | 304 |
| 36 | Adjustment bolt | 1 | 304 |
Valve fully open and fully closed state
Pneumatic slurry valve outline drawing
| Nominal diameter | A | B | L | C (Fully open, full off) | E (Fully open, full off) | D | F | G |
| DN50 | 165 | 120 | 48 | 445/360 | / | φ220 | / | / |
| DN65 | 190 | 130 | 48 | 475/390 | / | φ220 | / | / |
| DN80 | 200 | 145 | 51 | 535/415 | / | φ220 | / | / |
| DN100 | 230 | 150 | 51 | 600/450 | / | φ250 | / | / |
| DN125 | 230 | 180 | 57 | 690/510 | / | φ250 | / | / |
| DN150 | 285 | 200 | 57 | 740/550 | / | φ280 | / | / |
| DN200 | 345 | 220 | 70 | 885/660 | / | φ355 | / | / |
| DN250 | 405 | 275 | 70 | 1061/780 | / | φ355 | / | / |
| DN300 | 485 | 330 | 76 | / | 1400/1050 | / | 260 | φ310 |
| DN350 | 535 | 350 | 76 | / | 1570/1160 | / | 260 | φ310 |
| DN400 | 600 | 380 | 89 | / | 1670/1220 | / | 260 | φ310 |
| DN450 | 635 | 400 | 89 | / | 1800/1230 | / | 340 | φ460 |
| DN500 | 705 | 450 | 114 | / | 1950/1790 | / | 340 | φ460 |
| DN600 | 820 | 510 | 114 | / | 2490/1890 | / | 340 | φ460 |
