| SMP-BC Sanitary Mixproof Valve |
 |
| SMP-BC
valve with Body Combination 30 |
Application
SMP-BC is a sanitary pneumatic seat valve, designed for
safety and leak detection when two different products flow through only
one valve.
The valve is for use in stainless steel pipe systems.
Working principle
SMP-BC is remote-controlled by means of compressed air.
The valve is a normally closed (NC) valve.
The valve is fitted with two small pneumatic normally open (NO) valves, a
detecting valve and a CIP-valve.
The valve plug (the upper plug in a change-over valve) has
two seals, forming a leakage chamber under atmospheric pressure between
them. Leaking product flows into the leakage chamber and is discharged
through the detecting valve.
SMP-BC can be cleaned by CIP by supplying compressed air to the actuator
(see fig. 1).
During cleaning the valve, flow pattern against the closing direction of
the valve plug makes SMP-BC insensitive to water hammer.
Standard design
SMP-BC is available in two versions, as a stop valve with
one valve body or as a change-over valve with three valve bodies (sizes
DN125-150 only as stop valve).
The valve bodies and the external actuator are clamped together. SMP-BC is
fitted with one detecting valve and one CIP-valve. The seals and the lip
seal can be serviced after removing the actuator.
SMP-BC, sizes DN125 and DN150 are very heavy. Therefore it
is recommended to manufacture and use auxiliary handling equipment.
Guidelines are given in IM 70771.
The recommended auxiliary equipment cannot be supplied by Alfa Laval.
Valve Body Combinations
|
Stop valve: |
|
Change-over valve: |
|
|
Type 20 |
Type 30 |
Type 111 |
Type 112 |
 |
| |
|
|
|
| |
|
|
|
| |
|
|
|
| |
|
|
|
 1) CIP in
2) CIP out |
 |
 |
| |
|
|
|
|
|
| a. |
Closed stop valve:
Cleaning of the leakage chamber. |
b |
Open stop valve:
Cleaning of the valve body and the leakage chamber. |
c. |
Closed change-over valve:
Cleaning of the upper valve body. |
Fig. 1. Operation/cleaning
Pressure drop/capacity diagrams
|
Stop valve: |
|
Change-over valve: |
 |
|
 |
 |
|
 |
 |
|
 |
| |
|
 |
Note! For the diagrams the following applies:
Medium: Water (20°C).
Measurement: In accordance with VDI 2173.
Max-pressure difference/support air pressure diagrams
| Upper plug max. product
pressure without leakage, as a function of support air. |
|
Upper plug max. product
pressure against which the valve can open, as a function of air
pressure. |
 |
|
 |
| Ø89 |
Actuator: |
A |
Ø133 |
Actuator: |
D |
|
|
|
|
|
|
|
| Ø89 |
Actuator with extra strong spring: |
B |
Ø133 |
Actuator with extra strong spring: |
E |
|
|
|
|
|
|
|
| Ø199 |
Actuator |
C |
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Upper plug max. product
pressure against which the valve can open, as a function of air
pressure. |
|
Lover plug (change over).
Max. Product pressure without leakage, as a function of air pressure. |
 |
|
 |
| Ø89 |
Actuator: |
A |
Ø133 |
Actuator: |
D |
|
Ø89 |
Actuator: |
A |
Ø133 |
Actuator: |
D |
| Ø89 |
Actuator with extra strong spring: |
B |
Ø133 |
Actuator with extra strong spring: |
E |
|
Ø89 |
Actuator with extra strong spring: |
B |
Ø133 |
Actuator with extra strong spring: |
E |
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Lover plug (change over).
Max. Product pressure without leakage, as a function of air pressure. |
|
|
|
|
|
|
|
 |
|
|
| Ø89 |
Actuator: |
A |
Ø133 |
Actuator: |
D |
|
|
|
|
|
|
|
| Ø89 |
Actuator with extra strong spring: |
B |
Ø133 |
Actuator with extra strong spring: |
E |
|
|
|
|
|
|
|
Max-pressure difference/support air pressure diagrams
| Lower plug (change over)
max. product pressure against which the valve can open by support air
and spring. |
|
Lower plug (change over)
max. product pressure against which the valve can open by support air
and spring. |
 |
|
 |
| Ø89 |
Actuator: |
A |
Ø133 |
Actuator: |
D |
|
|
|
|
Ø133 |
Actuator: |
D |
| Ø89 |
Actuator with extra strong spring: |
B |
Ø133 |
Actuator with extra strong spring: |
E |
|
|
|
|
Ø133 |
Actuator with extra strong spring: |
E |
| |
|
|
|
|
|
|
|
|
|
|
|
|
| CIP/detecting valves. Max.
Product pressure without leakage, as a function of air pressure. |
|
Max. CIP pressure in leakage
chamber without leakage to product area, as a function of product
pressure. |
 |
|
 |
| 1 |
CIP/detecting valve ø27 |
|
2 |
CIP/detecting valve ø32 |
|
|
The valves NW40/38 equipped
with the large actuator and extra strong spring, stands a CIP pressure
more then 20 bar at p= 10 bar. |
| |
|
|
|
|
|
|
Ø89 |
Actuator: |
I |
Ø133 |
Actuator: |
F |
| |
|
|
|
|
|
|
Ø89 |
Actuator with extra strong spring: |
K |
Ø133 |
Actuator with extra strong spring: |
G |
| |
|
|
|
|
|
|
Ø199 |
Actuator: |
H |
|
|
|
| Leakage chamber, pressure
drop and flow velocity. |
|
|
|
|
|
|
|
 |
|
|
|
|
|
|
|
| 1 |
CIP/detecting valve ø27 |
|
2 |
CIP/detecting valve ø32 |
|
|
|
|
|
|
|
|
| Dimensions (mm) |
|
Size |
38 |
51 |
63.5 |
76.1 |
101.6 |
40 |
50 |
65 |
80 |
100 |
125 |
150 |
|
|
mm |
mm |
mm |
mm |
mm |
DN |
DN |
DN |
DN |
DN |
DN |
DN |
|
A1 |
345 |
355 |
433 |
455 |
527 |
343 |
354 |
430 |
456 |
526 |
535 |
584 |
|
A2 |
370 |
380 |
458 |
487 |
559 |
368 |
379 |
455 |
488 |
558 |
580 |
629 |
|
A3 |
485.8 |
505.8 |
616.2 |
651.1 |
751.8 |
485 |
506 |
616 |
667 |
752 |
|
|
|
A4 |
510.8 |
530.8 |
648.2 |
683.1 |
783.8 |
510 |
531 |
641 |
699 |
784 |
|
|
|
C |
90 |
102 |
124 |
129 |
157 |
90 |
102 |
124 |
134 |
157 |
|
|
|
C1 |
80 |
84 |
108 |
115 |
150 |
80 |
84 |
108 |
120.5 |
150 |
|
|
|
OD |
38.1 |
50.8 |
63.5 |
76.1 |
101.6 |
41 |
53 |
70 |
85 |
104 |
129 |
154 |
|
ID |
34.9 |
47.6 |
60.3 |
72.1 |
97.6 |
38 |
50 |
66 |
81 |
100 |
125 |
150 |
|
t |
1.6 |
1.6 |
1.6 |
2.0 |
2.0 |
1.5 |
1.5 |
2.0 |
2.0 |
2.0 |
2.0 |
2.0 |
|
E |
49.5 |
61.5 |
82.3 |
87.3 |
133.5 |
49.5 |
61.5 |
82.3 |
87.3 |
133.5 |
150 |
150 |
|
E1 |
20.5 |
26.8 |
33.2 |
39.1 |
51.8 |
22 |
28 |
36 |
43.5 |
53 |
|
|
|
F |
25 |
25 |
32 |
32 |
32 |
25 |
25 |
32 |
32 |
32 |
49 |
49 |
|
G |
27 |
33.3 |
39.7 |
45.6 |
58.3 |
28.5 |
34.5 |
42.5 |
50 |
59.5 |
72 |
84.5 |
|
H |
89 |
89 |
133 |
133 |
133 |
89 |
89 |
133 |
133 |
133 |
199 |
199 |
|
J |
46.7 |
46.7 |
57 |
66.6 |
84.3 |
46.7 |
46.7 |
57 |
66.6 |
84.3 |
99.5 |
99.5 |
|
K |
63 |
63 |
63 |
63 |
63 |
63 |
63 |
63 |
63 |
63 |
58.5 |
58.5 |
|
M/ISO clamp |
21 |
21 |
21 |
21 |
21 |
|
|
|
|
|
|
|
|
M/ISO male |
21 |
21 |
21 |
21 |
21 |
|
|
|
|
|
|
|
|
M/DIN male |
|
|
|
|
|
22 |
23 |
25 |
25 |
30 |
46 |
50 |
|
M/SMS male |
20 |
20 |
24 |
24 |
35 |
|
|
|
|
|
|
|
|
M/BS male |
22 |
22 |
22 |
22 |
27 |
|
|
|
|
|
|
|
|
Weight (kg) |
|
|
|
|
|
|
|
|
|
|
|
|
|
Stop valve |
6.0 |
6.3 |
12.8 |
13.3 |
16.6 |
6.0 |
6.3 |
12.8 |
14.0 |
16.6 |
43.4 |
44.5 |
|
Weight (kg) |
|
|
|
|
|
|
|
|
|
|
|
|
|
Change-over valve |
7.7 |
8.1 |
15.0 |
17.0 |
23.0 |
7.7 |
8.1 |
15.0 |
18.0 |
23.0 |
|
|
|
Air Connections Compressed air:
R 1/8" (BSP), internal thread.
CIP connection:
R 3/8" (BSP), external thread.
Leakage connection:
R 3/8" (BSP), external thread. |
|
Caution, opening/closing time:
Opening/closing time will be effected by the following:
- - The air supply (air pressure).
- - The length and dimensions of the air hoses.
- - Number of valves connected to the same air hose.
- - Use of single solenoid valve for serial connected air actuator
functions.
- - Product pressure.
|
 |
 |
 1) CIP valve
2) Detecting valve |
|
a. Stop valve. |
b. Change-over valve. |
c. Top view |
Technical data
| Max. product pressure (depending on
valve specifications): |
1000 kPa (10 bar). |
| Min. product pressure: |
Full vacuum. |
| Temperature range: |
-10°C to +140°C (EPDM). |
| Air pressure: |
500 to 800 kPa (5 to 8 bar). |
|
Air consumption (litres free air) for one stroke |
| Size |
38-51 mm |
63.5-101.6 mm |
|
|
| |
DN 40-50 |
DN 65-100 |
DN 125-150 |
DN 125-150 |
|
Stop valve |
0.2 x air pressure (bar) |
0.7 x air pressure (bar) |
1.5 x air pressure (bar) |
2.2 x air pressure (bar) |
|
Actuator function |
NO and NC |
NO and NC |
NC |
NO |
| Stop valve |
|
|
3.6 x air pressure (bar) |
2.9 x air pressure (bar) |
| Actuator function |
|
|
NC (Support air for closing) |
NO (Support air for opening) |
|
Change-over valve |
0.2 x air pressure (bar) |
0.7 x air pressure (bar) |
|
|
|
Actuator function |
NO and NC |
NO and NC |
|
|
Materials
| Product wetted steel parts: |
Acid-resistant steel 1.4401 (316L). |
| Finish: |
Semi bright. |
| Other steel parts: |
Stainless steel 1.4301 (304). |
| Product wetted seals: |
EPDM rubber. |
| Other seals: |
Nitrile (NBR) |
Options
- - Male parts or clamp liners in accordance with required standard.
- - ThinkTop®
- - Actuator with stronger spring.
- - Larger actuator for valve sizes 38-51 mm/DN40-50.
- - NOT-element for extra air pressure supply (spring- closed
position).
- - CIP installation kits.
- - Other valve body combinations.
- - Surface roughness, product wetted parts: Ra ≤0.8 μm.
- - Product wetted seals of Nitrile (NBR) or Fluorinated rubber (FPM).
- - Service tools for actuator.
- - Tool for plug seals (Necessary for changing the seals).
Ordering
Please state the following when ordering:
- - Valve type.
- - Valve port combination: Type nos.
- - Valve port size combination, (lower and upper ports).
- - Connections if not welding ends.
- - Other options.
Note!
For further details, see also PD 65036 and instruction IM
70771. |
