Series DX0 pages

SERIES DX
Slurry Knife Gate Valve
ǠFully elastomer lined
Ǡ100% full-port design
ǠEliminates need for packing
ǠAbrasion resistant slurry sleeves
ǠBi-directional, drop-tight shut-off
ǠEliminates seat cavity which prevents slurry
build-up or dewatering

Red Valve’s Series DX Slurry Knife Gate Valve is the most durable and userfriendly knife gate valve for difficult slurry applications. The fully elastomerlined DX Valve prevents slurry build-up or dewatering by eliminating the
seat cavity.
When open, the DX Valve’s reinforced elastomer sleeves seal against each
other and provide a 100% full-port opening which minimizes turbulence and
wear. In this open position, the seats isolate and protect all metal parts of the
valve from coming in contact with the process. When closed, the sleeves provide a drop-tight seal in both directions.
Each time the DX Valve strokes, it discharges a small amount of slurry,
which keeps the gate path and seat area clear of entrapped particulates.
Unlike traditional knife gate valves, the DX prevents slurry build-up in the
seat area, which might otherwise prohibit the valve’s ability close. Both the
slurry sleeves and gate are field replaceable.
A wiper blade mounted on top of the valve prevents the gate lubricant and
process from leaking through the top. The DX Valve design eliminates the
need for traditional packing. This wiper blade also prevents external grit from
entering the valve body.
Extensive in-house testing and
proprietary formulation of
elastomers allows Red Valve to
guarantee our sleeves against
fatigue or loss of compression for
50,000 cycles!
To control slurry discharging from
slot in the valve, a plate style splash
guard is utilized. Optional systems
to pipe or flush the slurry away are
also available.

Materials of Construction

Series DX Slurry Knife Gate

Open

ǠDuctile iron body standard 3”- 24”
ǠFabricated steel body 26”- 36”
ǠAvailable sleeve materials: Pure Gum Rubber,
Neoprene, Hypalon®, Chlorobutyl, BUNA-N, EPDM or
Viton®
ǠStandard gate material: 316L S.S.
ǠOptional gate materials: 17-4PH, 317L, 904L, duplex,
alloy 20 and C-276
ǠOptional proprietary gate coatings: PTFE, PFA and FEP
ǠOptional splash guard and pipe-a-way containment

Closed

Length F to F
Without
With
Valve Retaining Retaining
Size Flanges Flanges
3”
5.875”
6.875”
4”
5.875”
6.875”
7”
6”
6”
8”
6.25”
7.25”
10”
8.875”
10.125”
12”
10.125”
14”
16”
11”
18”
12.125”
14.125”
20”
24”
14.625”
30”
15.75”

Closed
C
17.13”
18.25”
21.06”
26.56”
32.44”
37”
43.63”
47.5”
52.63”
57.94”
66.68”
88.63”

Open
H
20.38”
22.63”
27.18”
34.56”
43.63”
50.88”
57.63”
63”
70”
74.13”
86.94”
120.63”

Retaining rings are optional in valve sizes 3” - 8” and
standard in sizes 10” and larger.
36” and 42” available upon request.

Red Valve Company, Inc. • 600 N. Bell Ave., Carnegie, PA 15106 • 412-279-0044 • Fax 412-279-7878 • www.redvalve.com