ky Simply Unique Single Seat Unique SSV Standard Concept Unique SSV meets the highest demands of your process in terms of hygiene and safety. It is built on a well-proven platform from an installed base of more than one million valves. Working principle The valve is a pneumatic seat valve in a hygienic and modular design for a wide field of duties, e.g. as a shut-off valve with two (2) or three (3) ports or as a change-over valve with three (3) to five (5) ports. The valve is remote-controlled by means of compressed air. It has few and simple moveable parts which results in a very reliable valve and low maintenance cost. Standard design The Unique Single Seat Standard valve comes in a one or two body configuration. To ensure a high degree of flexibility the valve seat between the two bodies in the Change-over version is loose. The valve features an optimized life span of the seals through a defined compression design. The actuator is connected to the valve body using a yoke and all components are assembled with clamp rings. . TECHNICAL DATA Temperature Temperature range PHYSICAL DATA . . . . . . . . . . . . . -10°C to +140°C (EPDM) Pressure Max. product pressure . . . . . . . . . . 1000 kPa (10 bar) Min. product pressure . . . . . . . . . . . Full vacuum Air pressure . . . . . . . . . . . . . . . . . . 500 to 700 kPa (5 to 7 bar) Materials Product wetted steel parts: Other steel parts . . . . . . . External surface finish . . . Internal surface finish . . . . Product wetted seals: . . . Other seals . . . . . . . . . . Valve Body Combinations Actuator function - Pneumatic downward movement, spring return. - Pneumatic upward movement, spring return. - Pneumatic upward and downward movement (A/A). 1.4404 (316L) 1.4301 (304) Semi-bright (blasted) Bright (polished), Ra < 0.8 µm EPDM NBR

Options A. Male parts or clamp liners in accordance with required standard. B. Control and Indication: IndiTop, ThinkTop or ThinkTop Basic. C. Product wetted seals in HNBR or FPM. D. Plug seals HNBR, FPM or TR2 plug (floating PTFE design). E. External surface finish bright. Below are some of the valve models available, though please use the Alfa Laval computer aided selection tool (CAS) for full access to all models and options. - Note! For further details, see instruction ESE00202. Other valves in the same basic design The Unique SSV valve range includes several purpose built valves. Reverse...

Pressure drop/capacity diagrams Δ Note! For the diagrams the following applies: Medium: Water (20°C) Measurement: In accordance with VDI2173 Pressure drop can also be calculated in CAS. Pressure drop can also be calculated with the following formula: Q = Kv x √∆p Where Q = Flow in m3/h. Kv = m3/h at a pressure drop of 1 bar (see table above). ∆ p = Pressure drop in bar over the valve. How to calculate the pressure drop for an ISO 2.5" shut-off valve if the flow is 40 m3/h 2.5" shut-off valve, where Kv = 111 (See table above). Q = Kv x √∆p 40 = 111 x √∆p 40 2 0.13 bar 111 (This is approx. the...

Pressure data for Unique Single Seat Valve standard A Table 1 - Shut -off and Change -over valves Actuator / Valve body Plug position Table 2 - Shut -off and Change -over valves Actuator / Valve body Max. pressure in bar against which the valve can open Valve size DN50 DN 65 DN 80 DN 100 DN/OD DN/OD DN/OD DN/OD Table 3 - Shut -off and Change -over valves with high pressure actuator option Actuator / Valve body Max. pressure in bar without leakage at the valve seat Valve size DN50 DN 65 DN 80 DN 100 DN/OD DN/OD DN/OD DN/OD Plug position Max. pressure in bar without leakage at the valve seat Valve...

Alfa Laval reserves the right to change specifications without prior notification. ALFA LAVAL is a trademark registered and owned by Alfa Laval ESE00172EN 1201 Corporate AB. © Alfa Laval How to contact Alfa Laval Contact details for all countries are continually updated on our website. Please visit www.alfalaval.com to access the information direct.