POLNA Z1B Series Specification sheet

www.polna.com.pl
CONTROL VALVE
Z1B
®
type
INSTRUCTION MANUAL FOR INSTALLATION,
OPERATION AND USE
Edition Z1B/ 10 /20 22

Instruction manual for installation, operation and use
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Technical characteristics of the product
Marking Conformity marking
DN/NPS PN/CLASS PT [bar] TS [°C]
Date of pressure test
Serial number/ year of production
Category acc. to PED Category of fluid Liquid 
Gas 
List of contents:
1. Introduction
2. General warnings
3. Requirements for equipment used in potentially explosive
atmosphere according to Directive 2014/34/EU (ATEX)
4. Conditions of safe use
5. Design and operating principle
6. Dimensions
7. Normal operating conditions
8. Storage and transport
9. Installation
10. Start-up and assembly with drives
11. Service
12. Repair
13. List of spare parts
14. Product disposal
15. Troubleshooting
1. Introduction
The Instruction manual for installation, operation and use is
intended for products designed and manufactured according to
the requirements of the ISO 9001 quality management system,
Pressure Equipment Directive (PED) 2014/68/EU, ATEX
directive 2014/34/EU and AD2000 Merkblatt regulations,
intended for installation on pipelines.
2. General warnings
WARNING
Prior to the product installation and use, read carefully
and follow the Instruction. All activities related to
installation, operation and use of the product have to be
carried out by appropriatly trained and skilled staff.
"POLNA" S.A., hereinafter also called the manufacturer,
has highly qualified service staff able to assist in
installation, maintenance and repairs of our valves.
The warning symbol in the Instruction means that
the content (of a WARNING or CAUTION message) is very
important due to safety reasons. Failure to observe the
warnings may lead to a hazard to health, life or material
losses.
The product is intended for installation on pipelines.
Any other use has to be agreed with "POLNA" S.A. at the
stage of ordering of the product. If in doubt, contact
"POLNA" S.A. for explanation before performing any
further actions.
If the product is installed and maintained correctly, its
most ergonomic operation is ensured. However, it is
necessary to follow the requirements given in the
Instruction.
The product has to be installed and maintained
according to domestic and industrial regulations and
instruction.
The Instruction does not cover all cases and incidents
that may occur during installation, use and maintenance or
local safety regulations.
The content of the Instruction is of informative nature
and is considered to be true. The company reserves the
right to modifications, improvements and changes in the
technical data without notice.
"POLNA" S.A. is not liable for a valve selection made
by the buyer on his own or for operation and use of the
valve against its intended use. Failing to comply with the
provisions of this document, in particular when it comes to
use, repairs etc., will result in losing the guarantee and
warranty.
Z1B type control valves (Edition_ 10/2022 )
EN

Instruction manual for installation, operation and use
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3. Requirements for equipment used in
potentially explosive atmosphere according
to Directive 2014/34/EU (ATEX)
3.1 Conditions of completing
Z1B type valves are designed according to the
requirements for equipment operating in potentially explosive
atmosphere for group II, category 2 according to PN-EN 13463-
1:2002, considering the following in particular:
• ensuring operation according to technical parameters
established by the manufacturer and high level of protection,
• using the product in areas that can become potentially
explosive atmosphere caused by air mixtures with gases,
vapour, mist or dust.
3.2 Conditions of use
"Z1B” type valves marked as can be used for
operation in the following zones according to PN-EN 1127-1:
1997:
• Zone 1,
• Zone 2,
• Zone 21,
• Zone 22.
3.3 Conditions for repairs and maintenance
Safety conditions applying to tools and zones where they
can be used according to EN1127-1, Appendix A have to be
ensured during inspections, repairs and maintenance in
explosive atmospheres.
4. Conditions of safe use
The following rules have to be observed to ensure safe use:
• disassembly of the valve from a pipeline or disassembly of
parts in contact with the medium can be performed after
making sure that they are not subject to the action of the fluid
pressure,
• when working at high temperatures take care to avoid burns
caused by hot parts of the valve and use shields wherever
possible,
• valves have to be mounted and installed only by qualified
staff,
• rotation of the valve stem in the bonnet body is not
acceptable in valves with a bellows seal bonnet as the bellows
can become damaged.
Z1B type control valves (Edition_ 10/2022 )
EN

Instruction manual for installation, operation and use
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5. Design and operating principle
The basic components of a Z1B type control valve include:
body (1a, 1b), bonnet (2a, 2b, 2c), seat (3), valve plug (4a, 4b,
4c), control cage (6), plug stem (5) and valve plug stem sealing
(25). Marking and names of components are presented in
Figure 1 and Table 1.
The flow of the working medium through the valve is
adjusted by a linear movement of the valve plug with a fixed
connection with the stem of the actuator or manual drive.
Input signal being the following:
a) in pneumatic actuators:
compressed air with the nominal range of the control
pressure between 140 and 600 kPa or within other ranges if
a positioner is used,
b) in electric drives:
with a 3-point control
- electric signal with the supply voltage of 220 V AC; 24 V
AC; 380 V AC, 500V AC etc.,
with continuous control
- voltage signal 0…10 V; 2…10 V or current signal 0…5
mA; 0…20 mA; 4…20 mA, profibus and other
causes linear displacement of the drive stem. The
movement is proportional to the value of the input signal.
Table 1. Marking and names of components.
No. in
Figure 1
Component name
1a Flanged body
1b Valve body with butt welded ends (BW type)
1c Valve body with socket welded ends (SW type)
2a Standard bonnet
2b Extended bonnet
2c Bellows seal bonnet
3 Seat
4a Piston valve plug (unbalanced)
4b Piston valve plug balanced with a gasket
4c Piston valve plug balanced with a pilot
5 Valve stem
6 Control cage
7 Choking cage I
8 Choking cage II
9 Body gasket
10 Seat gasket
11 Control cage gasket
12 Plug stem pin
13 Balanced valve plug nut
14 Packing washer of balanced valve plug
15 Sealing ring of balanced valve plug
16 Pilot
17 Spring
18 Lock nut
19 Retainer ring
20 Locking ring
21 Guiding ring of balanced valve plug
22 Body screw
23 Body nut
24 Guiding sleeve
25 Packing
26 Pressing sleeve
27 Pressing lever
28 Distance sleeve
29 Spring
No. in
Figure 1
Component name
30 Packing washer
31 Bonnet screw
32 Bonnet nut
33 Fixing nut
34 Bellows seal bonnet housing
35 Packing set of bellows seal bonnet
36 Retaining plate
37 Packing set gasket
38 Bellows seal bonnet gasket
39 Pin
40 Retaining ring
41 Nut
42 Plug
43 Bellows seal bonnet housing screw
44 Bellows seal bonnet housing nut
45 Spacer sleeve
46 Packing
47 Distance sleeve
48 Packing set
49 Pressing sleeve
50 Disk spring
51 Pressing plate
52 Low nut
53 Nameplate
54 Round-head grooved pin
55 Actuator connector
Sealing ring of balanced valve plug (MUPU type)56 Pressing plate57 Washer with external tap58 Heksagon head screw59
Z1B type control valves (Edition_ 10/2022 )
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Instruction manual for installation, operation and use
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Standard bonnet with PTFE-
V sealing
Extended bonnet with
GRAPHITE sealing
Extended bonnet with
live loading sealing
bellows seal bonnet with
PTFE+GRAPHITE sealing
Control cage Control cage with one choking cage Control cage with two choking cages
Unbalanced valve plug Balanced valve plug with a gasket Balanced valve plug with a pilot
Flanged body (FL type) Valve body with butt welded ends
(BW type)
Valve body with socket welded
ends (SW type)
Fig. 1. Z1B type control valve - internal components
Z1B type control valves (Edition_ 10/2022 )
EN

Instruction manual for installation, operation and use
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Fig. 2. Z1B type control valve with a unbalanced valve plug
Z1B type control valves (Edition_ 10/2022 )
EN

Instruction manual for installation, operation and use
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Fig. 3. Z1B type control valve with a unbalanced valve plug
Fig. 4. Z1B type control valve with
a unbalanced valve plug
Z1B type control valves (Edition_ 10/2022 )
EN

Instruction manual for installation, operation and use
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Fig. 5. Z1B type control valve with a balanced valve plug with a gasket
Fig. 6. Z1B type control valve with a balanced valve plug with a seal
Z1B type control valves (Edition_ 10/2022 )
EN

Instruction manual for installation, operation and use
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Fig. 7. Z1B type control valve with a balanced valve plug with a seal
Z1B type control valves (Edition_ 10/2022 )
EN

Instruction manual for installation, operation and use
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Fig. 8. Z1B type control valve with a balanced valve plug with a pilot
Z1B type control valves (Edition_ 10/2022 )
EN