LDM RV 102 Instruction For Installation And Maintenance

INSTRUCTION FOR INSTALLATION AND MAINTENANCE
®
LDM, spol. s r.o.
Czech Republic
The instructions for installation and maintenance of valves RV 102, 103 (further in text only RV10x) are binding
for users to ensure proper function of valves. The user must keep the rules said here while installation,
operation and maintenance. Technical details of individual execution are specified in catalogue data sheets.
1. TECHNICAL DESCRIPTION AND VALVE FUNCTION
1.1 Description
Control valves RV 102 are two-way or three-way valves with threaded connection. Valve body is made of
bronze. Control valves RV 103 are two-way or three-way valves with flanged connection. Valve body is made of
grey cast iron. Flow characteristics, Kvs values and leakage are acc. to international standards.
Valves can be used as :
Valves RV 10x are designed for hand wheel (RV 10x R) or for electric and electrohydraulic actuators as
Siemens (RV 10x EL, HL), Sauter (RV 10x ES, HS), Johnson Controls (RV 10x EC), Honeywell (RV 10x EH),
Belimo (RV 10x EB) and Czech of producers as Ekorex+, ZPA Nová Paka (RV 10x ER, EN).
1.2 Application
The valves are designed for control circuits PN 16. The valves are accurately designed to regulate pressure and
flow of liquids, gases and steams without abrasive particles as water (except of drinking water ) low-pressure
steam (only RV102) and air. Sort of operating medium has to be compatible with the material body. Acidity,
resp. alkalinity of medium has to be in range from pH 4.5 to pH 9.5. For proper function the producer
recommends to install a filtr into the pipeline in front of the valve .
The valve cannot work in cavitation conditions. RV 103 valves are not suitable for steam and steam
condensate.
1.3 Function
Control Valves serie RV 10x can have equal percentage plug or linear plug. Used actuators allow 3-point
controlling. They can be equipped with the signalization of end positions and transmitters of position.
1.4 Differential pressure
Value p is maximum differential pressure when on-off function is always guaranteed. Recommended
max
constant pressure drop should not be higher than 0.6 MPa for valves RV 102. For valves RV 103 pressure drop
should not be higher than 0,4 MPa.
1.5 Valve body specifications
Series
Type
Nominal diameter DN
Nominal pressure PN
Body material
Plug material
Operating temperature
Building length
Connection
Type of plug
Flow characteristic
Kvs values
Leakage
Rangeability
Packing set
PM - 009/12/01/GB _ RV 102, 103
CONTROL VALVE
DN 15 - 50 PN 16
- three-way control valve
- two-way control valve with reversing function
- two-way angular control valve
RV 102
Two-way control valve with reversing function
Bronze 42 3135 (CuSn5Pb5Zn5)
Acc. to DIN 3202 - M4
Socket with female thread
Acc. to ÈSN EN ISO 228-1
Class III. acc. to ÈSN EN 1349 (<0.1% Kvs) in way A-AB
Three-way control valve
DN 15 - 50
PN 16
G rey cast iron
Brass 42 3234 (CuZn40Pb2)
from 0°C to 150°C
Acc. to ÈSN EN 558-1 - F1
Flange with raise face, type B1
Acc. to ÈSN EN 1092-1
V - ported
Linear, equal percentage
3
from 0.6 to 40 m /h
50:1
O - ring EPDM
RV 102
RV 103
PM - 009/12/01/GB
RV 103
EN-JL 1040
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