Alfalaval SB User manual

ESE02961-EN4 2022-01
Original manual
Instruction Manual
Alfa Laval SB Pressure Relief Valve

Table of contents
The information herein is correct at the time of issue but may be subject to change without prior notice
1. EC Declaration of Conformity ....................................................................... 4
2. Safety .................................................................................................... 5
2.1. Important information ............................................................................. 5
2.2. Warning signs ..................................................................................... 5
2.3. Safety precautions ................................................................................ 6
3. Installation .............................................................................................. 7
3.1. Unpacking/delivery ............................................................................... 7
3.2. General installation ................................................................................ 7
3.3. Valve assembly .................................................................................... 8
3.4. Welding procedures for welding flange ......................................................... 9
3.5. Installation of valve and accessories ............................................................ 11
3.6. Recycling information ............................................................................. 12
4. Operation ............................................................................................... 13
4.1. Operation .......................................................................................... 13
4.2. Discharge capacity ............................................................................... 14
4.3. Recommended cleaning ......................................................................... 15
5. Maintenance ........................................................................................... 16
5.1. General maintenance ............................................................................. 16
6. Technical Data ......................................................................................... 17
6.1. Technical data ..................................................................................... 17
7. Parts List and Service Kits .......................................................................... 20
7.1. Pressure Relief Valve ............................................................................. 20
7.2. Force Opener ..................................................................................... 22
3

1 EC Declaration of Conformity
Revision of Declaration of Conformity: 2020-02-10
The Designated Company
Alfa Laval Kolding A/S
Company Name
Albuen 31, DK-6000 Kolding, Denmark
Address
[phone]
Phone No.
hereby declares that
Valve
Designation
SB Pressure Relief Valve
Type
Serial number from AAB000000001 to AAB999999999
Serial number from 100700000001 to 100799999999
is in conformity with the following directives with amendments:
- Machinery Directive 2006/42/EC
- Pressure Equipment Directive 2014/68/EU of the European Community, Category IV
- Pressure Equipment Directive 2014/68/EU of the European Community, Fluida Group II
- EN 4126-1
Conformity Assessment According to Directive 2014/68/EU Annex III Module D
PED Quality Certificate No. QS-005-19 rev2
Notified Body Number: 1336
Inspecta Estonia OÜ
Teaduspargi 8
12618 Tallinn
ESTONIA
The person authorised to compile the technical file is the signer of this document
Global Product Quality Manager
Pumps, Valves, Fittings and Tank Equipment Lars Kruse Andersen
Title Name
Kolding 2022-01-01
Place Date Signature
4

2 Safety
Unsafe practices and other important information are emphasised in this manual.
Warnings are emphasised by means of special symbols.
2.1 Important information
Always read the manual before using the valve!
WARNING
Indicates that special procedures must be followed to avoid serious personal injury.
CAUTION
Indicates that special procedures must be followed to avoid damage to the valve.
NOTE
Indicates important information to simplify or clarify procedures.
2.2 Warning signs
General warning:
Caustic agents:
5

2Safety
All warnings in the manual are summarised on this page.
Pay special attention to the instructions below to avoid serious personal injury and damage to the valve.
2.3 Safety precautions
Installation:
Always read the technical data thoroughly (see chapter 6 Technical Data.) !
Never touch the moving parts if the actuator for force opening is supplied with compressed air.
Never dismantle the valve or actuator for force opening when under pressure.
Never dismantle the valve when it is hot.
Operation:
Never dismantle the valve or actuator for force opening when under pressure. !
Never dismantlethevalvewhenitishot.
Always read the technical data thoroughly (see chapter 6 Technical Data)
Never touch the moving parts or actuator for force opening when supplied with compressed air.
Never cover or in any way restrict the valve, must be able to work unobstructed at all time.
Always handle lye and acid with great care.
Maintenance:
Always read the technical data thoroughly (see chapter 6 Technical Data) !
Never service the valve when it is hot.
Never service the valve or actuator when under pressure.
Never put your fingers between the valve and actuator for force opening.
Never touch the moving parts if the actuator for force opening is supplied with compressed air.
Transportation:
Always ensure that all bolt connections are disconnected before attempting to remove the valve from the installation.
Always drain liquid out of valves before transportation.
Always ensure sufficient fixing of the valve during transportation.
6

3 Installation
The instruction manual is part of delivery. Study the instructions carefully.
The items refer to the Parts List and Service Kits section.
3.1 Unpacking/delivery
Step 1
CAUTION
Alfa Laval cannot be held responsible for incorrect unpacking.
Check the delivery for:
1. Valve seat and disc
2. Lever and weight
3. Bearing pins, washers and locking rings
4. Flange gasket (placed in valve seat)
5. Actuator for force opening (option)
6. Splash guard (option)
7. Proximity sensor (option)
Step 2
Remove any packing materials from the valve/valve parts.
Inspect the valve/valve parts for visible transport damage.
Avoid damaging the valve/valve parts.
3.2 General installation
Step 1
Always read the technical data thoroughly.
See chapter 6 Technical Data
Always release compressed air from the actuator for force opening after use.
CAUTION
Alfa Laval cannot be held responsible for incorrect installation.
7

3 Installation
The lever and weight are to be assembled with valve seat and disc.
Make sure the serial number engraved on the disc matches the serial number engraved on the lever.
3.3 Valve assembly
Pos. 1. Valve seat and disc
Pos. 2. Lever and weight
Pos 3. Serial number
8

3 Installation
The lever and weight are to be assembled with valve seat and disc.
Make sure the serial number engraved on the disc matches the serial number engraved on the lever.
3.4 Welding procedures for welding flange
Step 1
Spot weld from outside
Step 2
Weld the following sections first from the outside then from the
inside, and cool with air between each section.
Spot weld from inside
9

3 Installation
The lever and weight are to be assembled with valve seat and disc.
Make sure the serial number engraved on the disc matches the serial number engraved on the lever.
Step 3
- Ensure that the surface flatness tolerance equals ±0.2.
- Grind and polish the welding flange.
The valve should be seated horizontally. An inclination of max. 10°
is acceptable but the lever must then point upwards.
10

3 Installation
The valve is to be fitted with M16 bolts.
The options Splash guard and Force opener are also to be fitted with M16 bolts The Proximitysensoristobefittedbythe
valve’s M6 screws.
3.5 Installation of valve and accessories
Options
1. Force opener*
2. Splash guard
3. Proximity sensor
4. Welding flange
*The force opener is delivered with a
spacer kit. Adjust the spacer kit to a
recommended gap of 2-4 mm (0.08” -
0.16”) between piston and lever.
Tightening torques for bolts:
M16
M6
218 Nm
11 Nm
11

3 Installation
The valve is to be fitted with M16 bolts.
The options Splash guard and Force opener are also to be fitted with M16 bolts The Proximity sensor is to be fitted by the
valve’s M6 screws.
3.6 Recycling information
Unpacking
- Packing material consists of wood, plastics, cardboard boxes and, in some cases, metal straps.
- Wood and cardboard boxes can be reused, recycled or used for energy recovery.
- Plastics should be recycled or burnt at an authorised waste incineration plant.
- Metal straps should be sent for material recycling.
Maintenance
- All metal parts should be sent for material recycling.
- Worn out or defective electronic parts should be sent to a licensed handler for material recycling.
Scrapping
- At the end of use, the equipment should be recycled according to relevant local regulations. As well as the equipment itself,
any hazardous residues from the process liquid must be considered and dealt with in a proper manner. When in doubt, or in
the absence of local regulations, please contact your local Alfa Laval sales company.
12

4Operation
The valve is delivered with counterweight locked by welding to an individual opening pressure to suit the tank design data.
4.1 Operation
Never cover or in any way restrict the valve, it must be able to work unobstructed at all times.
Alfa Laval cannot be held responsible for incorrect operation.
The safety valve is not intended for pressure regulation; a large number of activations can damage the equipment.
Operating range
Nominal size Opening
75 mm (3”) 0.2 - 3.5 bar (2.9 - 50.8 psi)
100 mm (4”) 0.2 - 2.5 bar (2.9 - 36.3 psi)
150 mm (6”) 0.4 - 1.5 bar (5.8 - 21.8 psi)
Opening and Closing Characteristics
Set pressure Preset opening pressure
Reset pressure Closing pressure after discharge
Reset pressure = Set pressure x 0.9 if Set pressure > 1.0 bar (14.5 psi)
Reset pressure = Set pressure - 0.15 bar (2.17 psi) if Set pressure < 1.0 bar (14.5 psi)
Alfa Laval recommends an operating pressure of min. 10% lower than the set pressure value.
13

4Operation
The valve is delivered with counterweight locked by welding to an individual opening pressure to suit the tank design data.
4.2 Discharge capacity
In accordance with EN 4126-1
Capacity measuredat: ΔP=10% Set pressure ≥1bar(14.5psi)
ΔP=0.1 x Set pressure < 1 bar (14.5 psi)
Size 75
Size 100
Size 150
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Q (m3/h)
Set pressure (bar)
Size 3"
Size 4"
Size 6"
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Q (GPM US)
Set pressure (PSI)
14

4Operation
The valve is delivered with counterweight locked by welding to an individual opening pressure to suit the tank design data.
4.3 Recommended cleaning
Always handle lye and acid with great care.
Caustic hazard!
Always use
rubber gloves!
Always use
protective goggles!
It is important that the valve seat is kept clean.
Assuming the valve is operating normally, the valve disc is satisfactorily cleaned during the tank cleaning cycle as part of the tank.
It is recommended that the valve is supplied with the option of Force opener and Splash guard.
Force opener For opening of valve during tank cleaning cycle for complete valve seat cleaning.
Splash guard For containing CIP fluid spray from the tank cleaning cycle.
15

5 Maintenance
The valve is delivered with counterweight locked by welding to an individual opening pressure to suit the tank design data.
5.1 General maintenance
Step 1
Always read the technical data thoroughly.
See chapter 6 Technical Data
Step 2
Never service the valve when it is hot.
Never service the valve with the valve or actuator under pressure.
Atmospheric pressure required!
Burning hazard!
Step 3
Never put your fingers between the valve and actuator for force
opening.
Cutting hazard!
Step 4
Never touch the moving parts if the actuator for force opening is
supplied with compressed air.
Moving parts!
Below are some guidelines for maintenance and lubrication intervals.
Valve
To ensure the valve operates correctly, test of function at regular intervals is required.
Intervals are dependent on operation conditions and should be specified by the user or local regulations.
Alfa Laval recommend intervals of once every 6-12 months.
O-ring and flange gasket replacement every 2-5 years.
To ensure correct mounting of O-ring, the O-ring should be lubricated with soapy water. Do not use grease, oil or equivalent.
Actuator for force opening
Disassemble, clean and lubricate the actuator every 2-5 years.
O-ring replacement every 2-5 years.
16

6 Technical Data
It is important to observe the technical data during installation, operation and maintenance.
All personnel should be informed about the technical data.
6.1 Technical data
The Pressure Relief Valve is used to minimise the risk of damage to tanks due to liquid overfilling.
The Pressure Relief Valve is delivered with counterweight set and locked to suit customer requirements regarding opening
pressure.
When the pressure in the tank exceeds the preset opening value, the valve relieves the excess pressure.
The valve can be equipped with a force opener.
Valve data
Operation range
Nominal size Set pressure range
75 mm (3”) 0.2 - 3.5 bar (2.9 - 50.8 psi)
100 mm (4”) 0.2 - 2.5 bar (2.9 - 36.3 psi)
150mm(6”) 0.4-1.5bar(5.80-21.8psi)
Materials
Product wetted steel parts EN 1.4404 (AISI 316L) with 3.1 cert.
Product wetted steel surfaces Surface roughness Ra<0.8 µm (<32 µ”)
Product wetted seals EPDM
Actuator data
Actuator for force opening
Max. air supply 10 bar (145 psi)
Min. air supply 5bar(72.5psi)
Noise
Noise of actuator 75 dB(A)
17

6 Technical Data
It is important to observe the technical data during installation, operation and maintenance.
All personnel should be informed about the technical data.
Weight
Nominal size Set pressure range Weight
0.2 -0.3 bar (2.9-4.35 psi) 10.8 kg
0.4 bar (5.8 psi) 12.8 kg
0.5-0.6bar(7.3
-8.7 psi) 14.8 kg
0.5-0.6bar(7.3-8.7psi) 14.8 kg
0.7-1.0 bar (10.2-14.5 psi) 18.8 kg
1.1-1.3 bar (16-18.9 psi) 20.8 kg
1.4-2.1 bar (20.3-30.5 psi) 24.8 kg
2.2-2.9 bar (32-42 psi) 29.8 kg
75 mm (3")
3.0-3.5 bar (43.5-50.8 psi) 38.8 kg
0.2 -0.3 bar (2.9-4.35 psi) 12.9 kg
0.4-0.7 bar (5.8-10.2 psi) 14.9 kg
0.8-1.4 bar (11.6-20.3 psi) 24.9 kg
1.5-1.8 bar (21.8-26.1 psi) 29.9 kg
100 mm (4")
1.9-2.5 bar (27.6-36.3 psi) 38.9 kg
0.4-0.8 bar (5.8-11.6 psi) 41.5 kg
0.9-1.2 bar (13.1-17.4 psi) 50.5 kg 150 mm (6")
1.3-1.5 bar (18.9-21.8 psi) 62.5 kg
Interface requirements
ID = Inside diameter
BC = Bolt circle
OD = Outside diameter
Interface requirements (mm)
Nominal size ID BC OD Bolts H1 H2 W
75 (3”) 75 (2.95”) 165 (6.5 ”) 200 (7.87”) 4xM16 375 (14.76”) 30 (1.18”) 740 (29.13”)
100 (4”) 100 (3.94”) 165 (6.5 ”) 200 (7.87”) 4xM16 375 (14.76”) 30 (1.18”) 740 (29.13”)
150 (6”) 150 (5.91”) 230 (9.06”) 270 (10.63”) 8xM16 430 (16.93”) 30 (1.18”) 1050 (41.34”)
18

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19

7 Parts List and Service Kits
It is important to observe the technical data during installation, operation and maintenance.
All personnel should be informed about the technical data.
7.1 Pressure Relief Valve
20