LIAG Venturi User manual

1) Manufacturer's Declaration 6) Installation Instructions
2) General Safety Guidelines 7) Demounting
3) Functional Description 8) Maintenance
4) Technical Data 9) Assembly
5) Parts and Spare Parts List
1)
Manufacturer's Declaration
•
Shutter:
We hereby declare that arc- and pigging valves are 'partly completed
machines' according of Article 2g of the EC Machinery Directive 2006/42.
2)
Safety Guidelines
Designated Use
Venturi Valves are designed for use in powder mixers for dosing
of powders and liquids in the beverage and food industry,
as well as, in the pharmaceutical and chemical industry.
General Safety Guidelines
•
Bearing bushing:
•Working on the Venturi Valve is
principally allowed only in depressurized and cooled condition
•When dismounting the Venturi Valve, escaping liquid or gas may
cause injury
3)
Functional Description
Surfaces:
Venturi Valves are used as dosing and control valves in powder mixers
•
in contact with product: Ra
≤
0,8µm (Ra ≤ 32µin)
and allow, by means of the radial-turning shutter, a precisly adjustable
dosing of powder.
Valve connections:
The operation of the shutter can be done by means of a manual handle
•
Welded ends:
DIN, SMS, Zoll
or an electro-pneumatic actuator with positioner (4-20mA).
•
Male ends:
DIN11851, SMS1145
•
Clamp connection:
Tri-Clamp
•
Others:
upon request
5)
Parts and Spare Parts List
4)
Technical Data
Nominal sizes:
DIN DN40 - DN80 / SMS DN38 - DN76 / Inch 1.5" - 3"
Parts and Spare Parts List
(spares in bold and italic type)
Versions:
•
Manual
•
Pneumatic or electric actuation with interface per Namur NE14 and
DIN EN ISO5211 /F05 / F07)
Materials:
•
Inox parts in contact with product:
AISI316L (1.4404)
•
Other inox parts:
AISI304 (1.4301)
•
O-ring seals:
EPDM (Standard)
FPM (Viton) (optional)
FEP (optional)
Date: 06.2019 Subject to changes Page 1 / 2
15 Bearing bushing 1
LIAG
®
- LAEUFER International AG · Dr. Zimmermannstr. 18/1 · D-88709 Meersburg / Germany · Telefon [phone] · Telefax +49(0)7532/4326-53
email: inf[email protected] · http://www.laeufer-ag.de
2
14 O-ring to the pivoted axle 1
13 Shutter 1
1
-40°F to +230°F +284°F 10 Cone 1
-76°F to +392°F +446°F 12
8 Pinch nut
-4°F to +320°F +356°F 11 O-ring to the cone
O-ring to the bottom and bearing cap
1
Temperature Short-term temp. 9 Snap ring 1
6 Bottom cap 1
7 Allen screw 1
4 Bearing cap 1
5 Valve casing 1
2 Fixing screws for the handle (actuator) 2 (4)
3 Fixing screws for bearing and bottom cap 8
Item Designation Qty.
1 Handle or pneumatic actuator 1
POM (Standard) -58°F to +230°F +284°F
DyneonTM TFM1600 (optional) -76°F to +392°F +446°F
-76°F to +392°F 290 psi 43.5 psi
Temperature Temp. short-term
Operating Manual for Venturi Valves for Powder Mixers
Pressure max.
Temperature Pressure
behind arc
Pressure
against arc
DyneonTM TFM1600
(Standard) -76°F to +230°F 145 psi 43.5 psi
16 Pivoted axle with arc 1
PTFE GL25 (optional) -76°F to +266°F 217.5 psi 43.5 psi
Techtron (optional) -76°F to +212°F 290 psi 43.5 psi
Tecapeek (optional)
Fig. 1
Fig. 2

6)
Installation Instructions
5.
Assemble pivoted axle with arc (16) and bearing cap (4). Pay attention to the
•Build in position acc. to Figure 3
marking (0) on the square pin of the pivoted axle (16)

indicates the shutter position (13) (see Figure 4).
•In order to avoid damage to the wearing parts, the Venturi Valve
5. Einsetzen des Schließers (6) in den Ventilkörper (5).
Insert shutter (13) into valve casing (5).
has to be dismantled before being welded in place in a piping system 6.
Fit the pivoted axle with the arc (16) together with bearing cap (4) to the valve
casing (5) as follows:
a)
The pivoted axle with arc (16) is designed that it exerts a defined
pressure on the shutter (13) during assembly. On account of the preload
characteristics, the bearing cap (4) declines approx. 4-5mm off the valve
casing (5) on the opposite side of the shutter (see Figure 4)
b)
The shutter should be positioned to the inner casing wall to prevent
damages on the plastic surface.
c)
Fasten the handle (1) in the desired position.
Note:
For Venturi Valves with pneumatic actuator, proceed as follows: before
assembly of the actuator, turn the square pin of the pivoted axle (16) into
into the desired shutter position by means of a jaw spanner and the
marking (0).
7.
Put in place and tighten the bearing cap fixing screws (3).
8.
Assemble the pinch nut (8) to the valve casing (5) by using a face pin spanner
7)
Dismantling
and a torque wrench: Torque 4Nm
1.
Never dismount a pressurized Venturi Valve.
Alternative:
Screw pinch nut (8) by hand as far as possible (without using a
2.
Loosen the fixing screws (2) on the handle to remove the handle (1).
tool) to the valve casing (5). Switch valve several times (approx. 5 x) and then
3.
Loosen the allen screw (7) on the pinch nut (8) which is connected to
slightly retighten pinch nut with cone (10) by hand and/or with face spanner
the cone (10) by a snap ring (9). (approx. 90°).
4.
Use a face pin spanner wrench to loosen the pinch nut (8).
9.
Secure pinch nut (8) with allen screw (7).
5.
Loosen the fixing screws (3) to remove the bearing cap (4) incl.
pivoted axle (16) and bearing bushing (15).
6.
Remove the shutter (13) from the valve casing (5).
7.
Pull out the pivoted axle (16) from
the bearing cap (4).
8.
Take out all O-rings.
8)
Maintenance
1.
Check functional surfaces in the valve casing (5) for their condition and
clean them thoroughly.
2.
Replace all O-rings: O-ring to the pivoted axle (14), O-ring to the cone (11),
O-rings to the bearing and bottom cap (12).
3.
Prior to assembly, lubricate O-rings with food-safe grease "Klüber Paraliq
GTE 703“.
4.
Check proper working order of the bearing bushing (15) and replace as
necessary.
5.
Clean shutter (13) and check for proper working and wear; replace as
necessary.
Lubricants:
•
For Venturi Valve O-ring seals in contact with product (EPDM / FPM /
/ FEP):

Klüber Paraliq GTE 703 NFS H1
•
For inox screws DIN912 and DIN933

Klüber lubricating paste UH1 84-201
Recommendation for cleaning (CIP)
Optimal cleaning results will be accomplished with switching of the
Venturi Valve while flushing (CIP).
9)
Assembly
1.
Check all components for cleanliness and proper condition prior to
Venturi Valve assembly.
2.
Insert bearing bushing (15) into bearing cap (4).
3.
Insert O-rings (11), (12) and (14).
4.
Fix valve bottom cap (6) on the valve body (5) and
tight the fixing screws (3).
Date: 06.2019 Subject to changes Page 2 / 2
Operating Manual for Venturi Valves for Powder Mixers
LIAG
®
- LAEUFER International AG · Dr. Zimmermannstr. 18/1 · D-88709 Meersburg / Germany · Telefon [phone] · Telefax +49(0)7532/4326-53
email: inf[email protected] · http://www.laeufer-ag.de
Fig. 3
Fig. 2
Fig. 4