Alfa Laval Unique Small Single Seat Valve

The Small Single Seat Valve from Alfa Laval — formerly 7000 series — features the sanitary and flexible design you know and trust in a fractional size. These 1/2 and 3/4 inch valves are applicable for a wide range of tasks, either as stop valves with two or three ports, or as change-over valves with three to five ports. The SSSV series is suitable for use in food, beverage, dairy, and pharmaceutical industries, wherever the sanitation of a seat valve is needed in fractional sizes.

Alfa's Small Single Seat Valves are available with the options you'd expect from a seat valve, including a range of seal materials, body styles, and actuation options. All valve configurations come with the quality manufacturing and design you've come to expect from Alfa Laval. Authorized to carry the 3-A symbol, the SSSV series provided the sanitary operation you require.

Models

  • Shutoff
  • Divert

The Unique SSSV is available in the following sizes: ½ and ¾ inch.

Application

The small single seat valve series is appropriate for any 1/2 and 3/4 inch application in the food, beverage, and dairy industries where the shut-off of change-over operation of a seat valve is needed.

Working Principle

Small single seat valves can be manually or pneumatically actuated. The SSSV maintains a simple design with only a few moving parts, making it a reliable component in any flow system.

Standard Design

The SSSV is available in ½ inch and ¾ inch OD tube connections. The design is composed of an actuator, lip seal, plug, and one or two valve bodies. The unique plug design is made from PVDF and the valve body interior has a 20 μinch Ra surface finish for high cleanability. The valve maintains an open yoke design and is authorized to carry the 3-A symbol. Valve bodies and actuators are connected via a clamp connection. The piston and valve plug maintain a threaded connection. Tri-Clamp or weld connections are standard.

Materials
Product Wetted Steel Parts316L
Finish (ID)<20 Ra Standard
Other steel parts304
PlugPVDF
Product wetted sealsEPDM (standard), HNBR, FPM (optional)
Other sealsNBR
Material gradesMolded elastomers of EPDM or SFYO-rings and seals of EPDM or SFY (Flouroelastomer)
Technical Data
Max product pressure 145 psi
Min product pressure Full vacuum
Temperature range 14°F – 284°F (EPDM)
Air pressure14.5 – 101.5 psi
ACTUATOR FUNCTION
  • Pneumatic downward movement, spring return (NO).
  • Pneumatic upward movement, spring return (NC).
  • Manually operated.
DIMENSIONAL DATA
SSSVDimensionalDrawings
½ in¾ in
A16.786.74
A27.067.17
A37.888.24
A48.168.67
C1.271.50
OD0.500.75
ID0.370.62
t0.060.06
E11.171.18
E21.771.77
F10.280.43
F20.280.43
H2.242.24
Weight (lb) Stop valve2.362.43
Weight (lb) Change-over valve3.003.11

*Dimensions valid for both welding ends and clamp ends.

Spare Parts

Unique SSSV Shut Off Manual Valve

Service Kits

Type1/23.4
Actuator, NBR96119263239611926323
EPDM96119263199611926330
HNBR96119263179611926328
FPM96119263189611926329

Spare Parts

Part1/23/4Diagram Key
Manual Handle, Complete96129404089612940408-
Manual Bonnet9612944102961294410215
Handle9612943901961294390116
Stem Extension9612944001961294400117
Lock Nut9611993808961199380818
Threaded Pin9611994282961199428220
Clamp w/ Hexnut9612939301961293930121a
Clamp w/ Wingnut9612939308961293930821b
Sealing Element9612939101961293910122
Lower Valve Body, Weld Ends, 2 Ports9612934417961293451730
Lower Valve Body, Weld Ends, 3 Ports9612934418961293451830
Lower Valve Body, Clamp Ends, 2 Ports961293443396129343330
Lower Valve Body, Clamp Ends, 3 Ports9612934434961293453430

Unique SSSV Parts List

Unique SSSV Change Over Manual Valve

Service Kits

Type1/23/4
Actuator, NBR96119263239611926323
EPDM96119263229611926333
HNBR96119263209611926331
FPM96119263219611926332

Spare Parts

Part1/23/4Diagram Key
Manual Handle, Complete96129404089612940408-
Manual Bonnet9612944102961294410215
Handle9612943901961294390116
Stem Extension9612944001961294400117
Lock Nut9611993808961199380818
Threaded Pin9611994282961199428220
Clamp w/ Hexnut9612939301961293930121a
Clamp w/ Wingnut9612939308961293930821b
Sealing Element9612939101961293910122
Upper Valve Body, Weld Ends, 1 Port9612934717961293481727
Upper Valve Body, Weld Ends, 2 Ports9612934718961293481827
Upper Valve Body, Clamp Ends, 1 Port9612934733961293483327
Upper Valve Body, Clamp Ends, 2 Ports9612934734961293483427
Valve Seat9612939201961293920129
Lower Valve Body, Weld Ends, 2 Ports9612934417961293451730
Lower Valve Body, Weld Ends, 3 Ports9612934418961293451830
Lower Valve Body, Clamp Ends, 2 Ports9612934433961293453330
Lower Valve Body, Clamp Ends, 3 Ports9612934434961293453430

Unique SSSV Parts List

Unique SSSV Adapter for ThinkTop

Spare Parts

PartPart NumberDiagram Key
Extension96129478011
Pin96129475012
Screw96119944033
Washer96119944044
Adapter96129473015
O-Ring96119944026

Unique SSSV Parts List

Unique SSSV Change Over Valve

Service Kits

Type1/23/4
Actuator, NBR96119263239611926323
EPDM96119263229611926333
HNBR96119263209611926331
FPM96119263219611926332

Spare Parts

Part1/23/4Diagram Key
Actuator, Complete NC96129404019612940402-
Piston/Spring Package, Complete96129404249612940425-
Cylinder961293960296129396041
Lock Wire9612939401961293940112
Bonnet9612939002961293900213
Air Fitting9611991988961199198814
Screw9611994401961199440119
Threaded Pin9611994282961199428220
Clamp w/ Hexnut9612939301961293930121a
Clamp w/ Wingnut9612939308961293930821b
Sealing Element9612939101961293910122
Upper Valve Body, Weld Ends, 1 Port9612934717961293481727
Upper Valve Body, Weld Ends, 2 Ports9612934718961293481827
Upper Valve Body, Clamp Ends, 1 Port9612934733961293483327
Upper Valve Body, Clamp Ends, 2 Ports9612934734961293483427
Valve Seat9612939201961293920129
Lower Valve Body, Weld Ends, 2 Ports9612934417961293451730
Lower Valve Body, Weld Ends, 3 Ports9612934418961293451830
Lower Valve Body, Clamp Ends, 2 Ports9612934433961293453330
Lower Valve Body, Clamp Ends, 3 Ports9612934434961293453430

Unique SSSV Parts List

Unique SSSV Shut Off Valve

Service Kits

Type1/23/4
Actuator, NBR96119263239611926323
EPDM96119263199611926330
HNBR96119263179611926328
FPM96119263189611926329

Spare Parts

Part1/23/4Diagram Key
Actuator, Complete NC96129404019612940402-
Piston/Spring Package, Complete96129404249612940425-
Cylinder961293960296129396041
Lock Wire9612939401961293940112
Bonnet9612939002961293900213
Air Fitting9611991988961199198814
Screw9611994401961199440119
Threaded Pin9611994282961199428220
Clamp with Hexnut9612939301961293930121a
Clamp with Wingnut9612939308961293930821b
Sealing Element9612939101961293910122
Lower Valve Body, w/ Weld Ends, 2 Ports9612934417961293451730
Lower Valve Body, w/ Weld Ends, 3 Ports9612934418961293451830
Lower Valve Body, w/ Clamp Ends, 2 Ports9612934433961293453330
Lower Valve Body, w/ Clamp Ends, 3 Ports9612934434961293453430

Unique SSSV Parts List

Create a MyCSI Dashboard to save resources for quick reference, track orders, and talk with experts.