D
H
D
H
H
D
R
H
D
Vessel Pad Vessel Nozzle Pipe Assembly Pad
Custom Vessel Pad
To connect valves to existing vessels or reactors, there are two possibilities: a nozzle or a pad
connection. In both cases, the customer must specify the following vessel connection details:
« D » (inside diameter), « H » (height), DN (nominal size), PN (pressure rating) and connection
standard (ISO, ANSI, DIN, etc.). To eliminate retention areas radius « R » can be specified for
optional contouring. For new projects Strahman can supply valves with easy-to-fit standardized
pads that are ready to be installed.
VESSEL CONNECTIONS
SEALING SYSTEM
Soft Seal
- The Soft Seal
is a seat-less sealing system
that assures superior per-
formance. While closing, the
plunger moves through the
valve bore and effectively
rods any remaining product
out of the valve.
Temperature
Min: -50
o
C / -60
o
F
Max: 200
o
C / 390
o
F
Pressure
Max: 100 bar / 1450 psig
Step 2
Valve is raised to
break through the
crust in the bottom
of the vessel
Step 3
Valve is opened
to the sampling
position
MULTI-POSITION & BOTTOM VESSEL SAMPLING
Strahman Soft Seal Valves allow the valve
to operate in multiple positions while main-
taining a seal between the process and the
outlet. It is a multi-position valve that serves
as a multi-purpose process tool.
RANGE DEFINITION
RANGE DEFINI-
VL
Manufacturing
Range
3/8”- DIN10
1/2”- DIN15
3/4”- DIN20
1”- DIN25
1 1/4”- DIN32
1 1/2”- DIN40
2”- DIN50
2 1/2”- DIN65
3”- DIN80
4”- DIN100
5”- DIN125
6”- DIN150
8”- DIN200
10”- DIN250
12”- DIN300
14”- DIN350
16”- DIN400
18”- DIN450
20”- DIN500
24”- DIN600
PN 10
PN 16
PN 20– 150 lbs.
PN 25
PN 40
PN 50 300 lbs.
PN64 400 lbs.
PN 100 600 lbs.
PN 150/ 160
-900 lbs.
PN 250 -1500 lbs
PN 320
PN 420—2500 lbs
PN 630 –4500 lbs
Fig. 020
F
ig. 047
Step 1
Valve is closed and flush with
vessel bottom
Step 4
Valve is open
to the drain
position
PN 20– 150 lbs.
PN 25
PN 40
Bottom Vessel Sampling
A Strahman sampling valve combined with a
sampling assembly can be used to sample
product prior to tank draining
The standard live loaded
packing arrangement avoids
over-compression of the upper
seal ring while the valve is in
the open position
Valve Body
A second lantern gland packing
arrangement improves piston
guidance and minimizes
retention areas
Rigid soft seat ring
provides dimensional
stability with
temperature variations
High rigidity lantern is
designed to avoid
distortion or contact
with the piston
Greater piston hardness resists
scratches that are the primary
cause of damage to the seal and
resulting in leakage
Top Hat
Extended Piston PTFE Sleeve
SERIES VL, CUSTOM MADE RANGE
C B
B
B
B
B
C
C
C
C
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