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.
Alfa Laval is a leading global supplier of products and solutions within the key technology areas of heat transfer, separation, and fluid handling.
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 Parts | 316L |
| Finish (ID) | <20 Ra Standard |
| Other steel parts | 304 |
| Plug | PVDF |
| Product wetted seals | EPDM (standard), HNBR, FPM (optional) |
| Other seals | NBR |
| Material grades | Molded 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 pressure | 14.5 – 101.5 psi |
ACTUATOR FUNCTION
- Pneumatic downward movement, spring return (NO).
- Pneumatic upward movement, spring return (NC).
- Manually operated.
DIMENSIONAL DATA
| ½ in | ¾ in | |
| A1 | 6.78 | 6.74 |
| A2 | 7.06 | 7.17 |
| A3 | 7.88 | 8.24 |
| A4 | 8.16 | 8.67 |
| C | 1.27 | 1.50 |
| OD | 0.50 | 0.75 |
| ID | 0.37 | 0.62 |
| t | 0.06 | 0.06 |
| E1 | 1.17 | 1.18 |
| E2 | 1.77 | 1.77 |
| F1 | 0.28 | 0.43 |
| F2 | 0.28 | 0.43 |
| H | 2.24 | 2.24 |
| Weight (lb) Stop valve | 2.36 | 2.43 |
| Weight (lb) Change-over valve | 3.00 | 3.11 |
*Dimensions valid for both welding ends and clamp ends.
Product Resources
See all resources by Alfa LavalSpare Parts
- Unique SSSV Adapter for ThinkTop
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Spare Parts
Part Part Number Diagram Key Extension 9612947801 1 Pin 9612947501 2 Screw 9611994403 3 Washer 9611994404 4 Adapter 9612947301 5 O-Ring 9611994402 6 - Unique SSSV Change Over Manual Valve
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Service Kits
Type 1/2 3/4 Actuator, NBR 9611926323 9611926323 EPDM 9611926322 9611926333 HNBR 9611926320 9611926331 FPM 9611926321 9611926332 Spare Parts
Part 1/2 3/4 Diagram Key Manual Handle, Complete 9612940408 9612940408 - Manual Bonnet 9612944102 9612944102 15 Handle 9612943901 9612943901 16 Stem Extension 9612944001 9612944001 17 Lock Nut 9611993808 9611993808 18 Threaded Pin 9611994282 9611994282 20 Clamp w/ Hexnut 9612939301 9612939301 21a Clamp w/ Wing Nut 9612939308 9612939308 21b Sealing Element 9612939101 9612939101 22 Upper Valve Body, Weld Ends, 1 Port 9612934717 9612934817 27 Upper Valve Body, Weld Ends, 2 Ports 9612934718 9612934818 27 Upper Valve Body, Clamp Ends, 1 Port 9612934733 9612934833 27 Upper Valve Body, Clamp Ends, 2 Ports 9612934734 9612934834 27 Valve Seat 9612939201 9612939201 29 Lower Valve Body, Weld Ends, 2 Ports 9612934417 9612934517 30 Lower Valve Body, Weld Ends, 3 Ports 9612934418 9612934518 30 Lower Valve Body, Clamp Ends, 2 Ports 9612934433 9612934533 30 Lower Valve Body, Clamp Ends, 3 Ports 9612934434 9612934534 30 - Unique SSSV Shut Off Manual Valve
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Service Kits
Type 1/2 3.4 Actuator, NBR 9611926323 9611926323 EPDM 9611926319 9611926330 HNBR 9611926317 9611926328 FPM 9611926318 9611926329 Spare Parts
Part 1/2 3/4 Diagram Key Manual Handle, Complete 9612940408 9612940408 - Manual Bonnet 9612944102 9612944102 15 Handle 9612943901 9612943901 16 Stem Extension 9612944001 9612944001 17 Lock Nut 9611993808 9611993808 18 Threaded Pin 9611994282 9611994282 20 Clamp w/ Hexnut 9612939301 9612939301 21a Clamp w/ Wingnut 9612939308 9612939308 21b Sealing Element 9612939101 9612939101 22 Lower Valve Body, Weld Ends, 2 Ports 9612934417 9612934517 30 Lower Valve Body, Weld Ends, 3 Ports 9612934418 9612934518 30 Lower Valve Body, Clamp Ends, 2 Ports 9612934433 961293433 30 Lower Valve Body, Clamp Ends, 3 Ports 9612934434 9612934534 30 - Unique SSSV Change Over Valve
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Service Kits
Type 1/2 3/4 Actuator, NBR 9611926323 9611926323 EPDM 9611926322 9611926333 HNBR 9611926320 9611926331 FPM 9611926321 9611926332 Spare Parts
Part 1/2 3/4 Diagram Key Actuator, Complete NC 9612940401 9612940402 - Piston/Spring Package, Complete 9612940424 9612940425 - Cylinder 9612939602 9612939604 1 Lock Wire 9612939401 9612939401 12 Bonnet 9612939002 9612939002 13 Air Fitting 9611991988 9611991988 14 Screw 9611994401 9611994401 19 Threaded Pin 9611994282 9611994282 20 Clamp w/ Hexnut 9612939301 9612939301 21a Clamp w/ Wingnut 9612939308 9612939308 21b Sealing Element 9612939101 9612939101 22 Upper Valve Body, Weld Ends, 1 Port 9612934717 9612934817 27 Upper Valve Body, Weld Ends, 2 Ports 9612934718 9612934818 27 Upper Valve Body, Clamp Ends, 1 Port 9612934733 9612934833 27 Upper Valve Body, Clamp Ends, 2 Ports 9612934734 9612934834 27 Valve Seat 9612939201 9612939201 29 Lower Valve Body, Weld Ends, 2 Ports 9612934417 9612934517 30 Lower Valve Body, Weld Ends, 3 Ports 9612934418 9612934518 30 Lower Valve Body, Clamp Ends, 2 Ports 9612934433 9612934533 30 Lower Valve Body, Clamp Ends, 3 Ports 9612934434 9612934534 30 - Unique SSSV Shut Off Valve
-
Service Kits
Type 1/2 3/4 Actuator, NBR 9611926323 9611926323 EPDM 9611926319 9611926330 HNBR 9611926317 9611926328 FPM 9611926318 9611926329 Spare Parts
Part 1/2 3/4 Diagram Key Actuator, Complete NC 9612940401 9612940402 - Piston/Spring Package, Complete 9612940424 9612940425 - Cylinder 9612939602 9612939604 1 Lock Wire 9612939401 9612939401 12 Bonnet 9612939002 9612939002 13 Air Fitting 9611991988 9611991988 14 Screw 9611994401 9611994401 19 Threaded Pin 9611994282 9611994282 20 Clamp with Hexnut 9612939301 9612939301 21a Clamp with Wingnut 9612939308 9612939308 21b Sealing Element 9612939101 9612939101 22 Lower Valve Body, w/ Weld Ends, 2 Ports 9612934417 9612934517 30 Lower Valve Body, w/ Weld Ends, 3 Ports 9612934418 9612934518 30 Lower Valve Body, w/ Clamp Ends, 2 Ports 9612934433 9612934533 30 Lower Valve Body, w/ Clamp Ends, 3 Ports 9612934434 9612934534 30
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