All packing arrangements
use a lantern ring that:
• Provides better stem
piston guiding
• Avoids dead space in
body cavities
Typical Packing Materials:
• PTFE
• PTFE / Aramide Braid
• Carbon / Graphite Braid
• Graphite Braid
• PTFE / Aramide Braid + Graphite
• Lamellar + Expanded Graphite
• Pure Graphite
Live loaded packing
arrangement
minimizes valve
maintenance
Optional 1/4 inch NPTF available for leak
detection or inert gas injection to avoid
leakage to atmosphere by creating an
over pressure
Bottom ring material is
selected with a differential
hardness from the piston
to prevent piston damage
• PTFE
• Aramide / Nitrile
• Carbon / Aramide
• Laminated Graphite
• Laminated Graphite / 316
• Spiral Wound 316L / PTFE
• Spiral Wound 316L / Graphite
• Spiral Wound 321 / Graphite
• Spiral Wound Inconel / Graphite
• Spiral Wound Titanium / Graphite
• Perfluoroelastomer (Kalrez) O
Ring
Valve Coding System
P Piston
D Disc
R Rising Disc
A Accessories
4 45
o
Branch Angle
6 60
o
Branch Angle
9 90
o
Branch Angle
S Straight
$ Special
B Extended Body
P Extended Plunger c
D Dismountable Seat
$ Special
V P 4 S B
-
V Vessel Reactor Valves
S Soft Seated
M M Seal
C M Control
D Dual Seal
R M Ring Seal
J Jacketed
- Non-Jacketed
Strahman has two Soft Seal Piston Valve styles available:
• Figure 020 for smaller and utilize a rising stem design.
• Figure 025 for large sizes use a non-rising stems to minimize overall length.
BODY ARRANGEMENTS
Strahman Bottom Disc design is a vessel outlet valve. When opening, the disc retracts completely
into the valve body. This provides an unrestricted full flow. In combination with maximized port sizes, this
design offers maximum flow capacity.
Strahman valves are available in a choice of options including material of construction, seat
arrangements, sealing systems to atmosphere, actuators and customized or standard connections to
piping. Other specific features are full jacketing, vacuum package and dead space free connections
to vessels.
Typical applications include the draining of viscous products especially in combination with low pres-
sure and/or vacuum processes.
Fig. 020
Fig. 025
• Welded Lips
• Metallic O Ring Helicoflex
Gasket Aluminium/316
• Metallic O Ring Helicoflex
Gasket Nickel/Nimonic 90
• 316L RTJ
• Nitrile O Ring
• EPDM O Ring
• Silicone O Ring
• Fluorocarbon (Viton) O Ring
• Silicone FEP Jacketed O
Ring
STANDARD BODY GASKET RANGE
• PTFE
• Aramide / Nitrile
• Carbon / Aramide
• Laminated Graphite
• Laminated Graphite / 316
• Spiral Wound 316L / PTFE
• Spiral Wound 316L / Graphite
• Spiral Wound 321 / Graphite
• Spiral Wound Inconel /
Graphite
• Spiral Wound Titanium /
Graphite
•
Welded Lips
STANDARD PAD GASKET RANGE
All packing arrangements
use a lantern ring that:
• Provides better stem
piston guiding
• Avoids dead space in
body cavities
Typical Packing Materials:
• PTFE
• PTFE / Aramide Braid
• Carbon / Graphite Braid
• Graphite Braid
• PTFE / Aramide Braid + Graphite
• Lamellar + Expanded Graphite
• Pure Graphite
Live loaded packing
arrangement
minimizes valve
maintenance
Optional 1/4 inch NPTF available for leak
detection or inert gas injection to avoid
leakage to atmosphere by creating an
over pressure
Bottom ring material is
selected with a differential
hardness from the piston
to prevent piston damage
• PTFE
• Aramide / Nitrile
• Carbon / Aramide
• Laminated Graphite
• Laminated Graphite / 316
• Spiral Wound 316L / PTFE
• Spiral Wound 316L / Graphite
• Spiral Wound 321 / Graphite
• Spiral Wound Inconel / Graphite
• Spiral Wound Titanium / Graphite
• Perfluoroelastomer (Kalrez) O
Ring
PACKING DEFINITION
Valve Coding System
P Piston
D Disc
R Rising Disc
A Accessories
4 45
o
Branch Angle
6 60
o
Branch Angle
9 90
o
Branch Angle
S Straight
$ Special
B Extended Body
P Extended Plunger c
D Dismountable Seat
$ Special
V P 4 S B
-
V Vessel Reactor Valves
S Soft Seated
M M Seal
C M Control
D Dual Seal
R M Ring Seal
J Jacketed
- Non-Jacketed
Strahman has two Soft Seal Piston Valve styles available:
• Figure 020 for smaller and utilize a rising stem design.
• Figure 025 for large sizes use a non-rising stems to minimize overall length.
BODY ARRANGEMENTS
Strahman Bottom Disc design is a vessel outlet valve. When opening, the disc retracts completely
into the valve body. This provides an unrestricted full flow. In combination with maximized port sizes, this
design offers maximum flow capacity.
Strahman valves are available in a choice of options including material of construction, seat
arrangements, sealing systems to atmosphere, actuators and customized or standard connections to
piping. Other specific features are full jacketing, vacuum package and dead space free connections
to vessels.
Typical applications include the draining of viscous products especially in combination with low pres-
sure and/or vacuum processes.
Fig. 020
Fig. 025
•
Welded Lips
• Metallic O Ring Helicoflex
Gasket Aluminium/316
• Metallic O Ring Helicoflex
Gasket Nickel/Nimonic 90
• 316L RTJ
• Nitrile O Ring
• EPDM O Ring
• Silicone O Ring
• Fluorocarbon (Viton) O Ring
• Silicone FEP Jacketed O
Ring
STANDARD BODY GASKET RANGE
•
PTFE
• Aramide / Nitrile
• Carbon / Aramide
• Laminated Graphite
• Laminated Graphite / 316
• Spiral Wound 316L / PTFE
• Spiral Wound 316L / Graphite
• Spiral Wound 321 / Graphite
• Spiral Wound Inconel /
Graphite
• Spiral Wound Titanium /
Graphite
•
Welded Lips
STANDARD PAD GASKET RANGE
Fig. 025
SERIES VL, CUSTOM MADE RANGE
PACKING DEFINITION
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