180R9346 | AQ240486503020en-001702 | 39© Danfoss | 2023.03
Operation guide Installation, Operation and Maintenance APP 53-92 pumps
The non-return valve is designed for use in
Seawater Reverse Osmosis (SWRO) membrane
systems. In case the high-pressure pump stops
momentarily, the volume of water in the
membrane vessel may work as an accumulator
and will send ow backwards.
When using multiple pumps in parallel, the
non-return valve
prevents the water from one pump to run into
the parallel-coupled pumps at start-up.
The VCM 92 is prepared for easy installation on
the high pressure outlet of APP 53-92, series 08 or
higher..
Use only Style 77DX coupling or equivalent.
12. VCM 3” Victaulic
Type Connection
1)
Diameter
mm (inch)
Victaulic
3)
(outlet
connection)
Length
mm (inch)
Material2
2)
Max.
pressure
barg (psig)
Code
number
VCM 92
3” outlet check
valve
)
87.7
(3.45)
3” Vic. OSG
180.5
(7.10)
Super
Duplex
83 (1.200) 180H0058
1)
The check valve is mounted directly in the outlet port with a ange with 8 screws M12 x 25.
2)
Wetted parts materials: Super Duplex, PEEK, PP, Hasteloy; FKM, NBR
3)
The installation instuction for Style 77DX is located in the Victaulic document I-100 Field Installation
Handbook (htpp://static.victaulic.com)
12.1 Technical data
VCM VCM 92
Min. ow continously
m/h 20
gpm 88
Max. ow continously
m/h 92
gpm 405
Max pressure MAWP
barg 83
psig 1200
Opening pressure barg 0.05- 0.08
psig 0.73-1.16
Pressure loss at max. ow barg < 0.45
psig < 6.5
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