 |
|
Pneumatic and manual Small Single Seat Valve. |
Application
The Small Single Seat Valve with its sanitary and flexible
design is applicable for a wide range of tasks either as a stop valve with
two or three ports or as a change-over valve with three to five ports.
The valve is suitable for use in food, beverage, dairy and pharmaceutical
industries.
Working principle
The valve is remote-controlled by means of compressed air
or manually operated.
The small single seat valve is very reliable due to its simple design and
few moving parts.
Standard Design
The Small Single Seat Valve is available as DN/OD 12.7 mm
and 19 mm and consists of actuator, sealing element, lip seal, plug and
valve bodies.
The plug is a PVDF plug. All components are assembled by means of clamp
rings whereas the piston and valve plug have a threaded connection. In
order to facilitate installation the valve is only partly assembled when
delivered. The valve has welding ends or clamp ends as standard.
Actuator function
- - Pneumatic downward movement, spring return (NO).
- - Pneumatic upward movement, spring return (NC).
- - Manually operated.
Valve body combinations
| |
 |
| 20 |
30 |
21 |
22 |
31 |
33 |
Pressure drop/capacity diagrams
|
Stop valve |
 |
|
 |
| |
|
Change-over valve |
 |
|
 |
 |
|
 |
 |
|
 |
|
NOTE! |
For the diagrams the following applies: |
| |
Medium: |
Water |
| |
Measurement: |
In accordance with VDI 2173 |
Pressure data for Small Single Seat Valve
Actuator type / function
10. Pneumatic downward movement, spring return (NO-lower
seat)
20. Pneumatic upward movement, spring return (NC-lower seat)
| Table 1: Stop and change-over valve. The table shows the
approx. static pressure (p) in bar without leakage at the valve
seat. |
|
Actuator / Valve body |
Air pressure |
Actuator |
Valve size |
|
combination and direction |
(bar) |
type/ |
DN/OD |
DN/OD |
|
of pressure |
|
function |
12.7 mm |
19 mm |
 |
|
10 (NO) |
Min. 10 |
Min. 10 |
 |
2 |
10 (NO) |
2.0 |
- |
|
3 |
10 (NO) |
Min. 10 |
3.0 |
|
4 |
10 (NO) |
|
Min. 10 |
 |
2 |
20 (NC) |
9.0 |
- |
| 3 |
20 (NC) |
Min. 10 |
Min. 10 |
 |
|
20 (NC) |
Min. 10 |
Min. 10 |
| Table 2: Stop and change-over valves. The table shows the
approx. static pressure (p) in bar against which the valve can open. |
|
Actuator / Valve body |
Air pressure |
Actuator |
Valve size |
|
combination and direction |
(bar) |
type/ |
DN/OD |
DN/OD |
|
of pressure |
|
function |
12.7 mm |
19 mm |
 |
|
10 (NO) |
Min. 10 |
Min. 10 |
 |
2 |
10 (NO) |
9.0 |
- |
|
3 |
10 (NO) |
Min. 10 |
6.0 |
|
4 |
10 (NO) |
- |
Min. 10 |
 |
2 |
20 (NC) |
Min. 10 |
Min. 10 |
 |
|
20 (NC) |
Min. 10 |
Min. 10 |
A = Air
AO = Air opens
AC = Air closes
SO = Spring opens
SC = Spring closes
P = Actual product pressure
| Dimensions (mm) |
|
|
Remote-controlled |
Manually operated |
|
Nominal |
DN/OD |
DN/OD |
|
Size |
12.7mm |
19mm |
12.7mm |
19mm |
| A1 |
172.2 |
171.2 |
109.7 |
112.7 |
|
A2 |
179.2 |
182.2 |
116.7 |
123.7 |
| A3 |
200.2 |
209.2 |
141.7 |
150.7 |
|
A4 |
207.2 |
220.2 |
148.7 |
161.7 |
| C |
32.3 |
38.1 |
32.3 |
38.1 |
|
OD |
12.7 |
19.0 |
12.7 |
19.0 |
| ID |
9.5 |
15.8 |
9.5 |
15.8 |
|
t |
1.6 |
1.6 |
1.6 |
1.6 |
| E1 |
29.8 |
29.9 |
29.8 |
29.9 |
|
E2 |
45.0 |
45.0 |
45.0 |
45.0 |
| F1 |
7.0 |
11.0 |
7.0 |
11.0 |
|
F2 |
7.0 |
11.0 |
7.0 |
11.0 |
| H |
57.0 |
57.0 |
35.0 |
35.0 |
|
Weight (kg) - Stop valve |
1.07 |
1.10 |
0.5 |
0.53 |
| Weight (kg) - Change-over
valve |
1.36 |
1.41 |
0.8 |
0.85 |
(900-233)
| |
|
Caution, opening/closing time: |
 |
 |
|
|
Air Connections Compressed air: |
| R 1/8" (BSP), internal thread. |
| Stop valve and change over
valve |
|
 |
 |
|
| Manual stop valve and change-over valve |
|
|
Technical data
| Max. product pressure: |
1000 kPa (10 bar). |
| Min. product pressure: |
Full vacuum. |
| Temperature range: |
-10°C to +140°C (EPDM) |
| Air pressure: |
100 to 700 kPa (1 to 7 bar). |
|
Air consumption (litres free air) for one stroke |
| Size |
12.7-19mm |
|
Stop valve/ |
0.06 x Air pressure (bar) |
|
Change-over valve |
|
|
Actuator function |
NO and NC |
| Product wetted steel parts: |
Acid-resistant steel 1.4404 (316L). |
| Finish outside: |
Semi bright. |
| Finish inside: |
Ra ≤0.5µm. |
| Other steel parts: |
Stainless steel 1.4307 (304L). |
| Plug: |
PVDF |
| Product wetted seals: |
EPDM rubber. |
| Actuator seals: |
Nitrile (NBR) |
| Alternative product wetted seals: |
HNBR, FPM. |
Options
- - 3.1.B Certificate.
- - Adapter for ThinkTop®.
- - Automation: See chapter in Product Catalogue.
- - Product wetted seals of HNBR or fluorinated rubber (FPM).
- - Stainless steel seal disc replacing standard lip seal.
- - Clamp with wingnut
Ordering
Please state the following when ordering:
- - Size.
- - Body with welding ends or clamp ends.
- - Actuator function, NC or manual.
- - Options.
Note!
For further details, see also PD 65036 and instruction IM
70860.
This product has EHEDG certification |
