Category: TRADITIONAL REFRIGERATION SYSTEMS
Notes:
The Series
42000 changeover valve is specifically designed to ensure safe
operation, continuous system availability, and easy maintenance in
professional refrigeration systems using A1-class refrigerants. Its
primary function is to switch between dual safety valves, allowing
maintenance on one valve while the other remains active, without requiring the
system to be depressurized.
The valve body is made from hot-forged brass EN
12165-CW617N, ensuring superior mechanical resistance and long-lasting
durability. The control stem, in AISI 303 stainless steel, is
sealed by a galvanized AVP steel threaded cap, equipped with a neoprene
gasket to protect internal components from external contamination and
moisture. The sealing system includes NBR gaskets, providing
reliable tightness under varying thermal and mechanical conditions.
A double O-ring between the two body halves ensures zero
leakage, while austenitic stainless steel screws provide secure and
stable closure.
The rotating NPT-threaded fittings, made from galvanized
AVP steel, are designed for direct connection with OLAB Series 42100 and
42200 safety valves, ensuring full mechanical and functional
compatibility.
This valve is built to withstand operating pressures up
to 80 bar (1160 psi) and functions reliably over a temperature range of
–35°C to +105°C (–31°F to +221°F), making it ideal for systems with
significant thermal variation.
Each unit undergoes 100% helium leak testing in a
sealed test chamber. It is then laser-engraved with a serial number and
date to ensure permanent traceability and certified performance.
The Series 42000 changeover valve is CE-marked in
compliance with Directive 2014/68/EU (PED) and is fully aligned with EN
378 requirements, offering the perfect solution for high-reliability A1
refrigerant systems.
Technical features:
COMPATIBLE A1 REFRIGERANT GASES
HFC, HFO, and HFO/HFC blends: R404A, R407C, R410A, R507, R32, R134a
HFO e miscele HFO/HFC: R1234ze, R448A, R449A, R450A, R452A, R1234yf, R1233zdOur Neoprene compound gaskets have been designed and produced to be compatible with group A1 refrigerant gases (as defined in ASHRAE standard 34).However, in consideration of the infinite application variables (pressure, temperature and mixing percentages), an application check on the system is always required.
SAFE
Enable safe replacement of the safety valve on the system without needing to depressurize the installation.
RELIABLE
Allow the simultaneous operation of one valve while excluding the other, ensuring uninterrupted service during maintenance or testing phases.
STABLE DISCHARGE PRESSURE
Ensure a pressure drop fully compatible with the operation of the safety device, under both saturated and superheated steam conditions.
SECURE SEALING
The double O-ring sealing at the body junction prevents any form of leakage, even under challenging working conditions.
The Series
42000 changeover valve is specifically designed to ensure safe
operation, continuous system availability, and easy maintenance in
professional refrigeration systems using A1-class refrigerants. Its
primary function is to switch between dual safety valves, allowing
maintenance on one valve while the other remains active, without requiring the
system to be depressurized.
The valve body is made from hot-forged brass EN
12165-CW617N, ensuring superior mechanical resistance and long-lasting
durability. The control stem, in AISI 303 stainless steel, is
sealed by a galvanized AVP steel threaded cap, equipped with a neoprene
gasket to protect internal components from external contamination and
moisture. The sealing system includes NBR gaskets, providing
reliable tightness under varying thermal and mechanical conditions.
A double O-ring between the two body halves ensures zero
leakage, while austenitic stainless steel screws provide secure and
stable closure.
The rotating NPT-threaded fittings, made from galvanized
AVP steel, are designed for direct connection with OLAB Series 42100 and
42200 safety valves, ensuring full mechanical and functional
compatibility.
This valve is built to withstand operating pressures up
to 80 bar (1160 psi) and functions reliably over a temperature range of
–35°C to +105°C (–31°F to +221°F), making it ideal for systems with
significant thermal variation.
Each unit undergoes 100% helium leak testing in a
sealed test chamber. It is then laser-engraved with a serial number and
date to ensure permanent traceability and certified performance.
The Series 42000 changeover valve is CE-marked in
compliance with Directive 2014/68/EU (PED) and is fully aligned with EN
378 requirements, offering the perfect solution for high-reliability A1
refrigerant systems.
Technical features:
COMPATIBLE A1 REFRIGERANT GASES
HFC, HFO, and HFO/HFC blends: R404A, R407C, R410A, R507, R32, R134a
HFO e miscele HFO/HFC: R1234ze, R448A, R449A, R450A, R452A, R1234yf, R1233zdOur Neoprene compound gaskets have been designed and produced to be compatible with group A1 refrigerant gases (as defined in ASHRAE standard 34).However, in consideration of the infinite application variables (pressure, temperature and mixing percentages), an application check on the system is always required.
SAFE
Enable safe replacement of the safety valve on the system without needing to depressurize the installation.
RELIABLE
Allow the simultaneous operation of one valve while excluding the other, ensuring uninterrupted service during maintenance or testing phases.
STABLE DISCHARGE PRESSURE
Ensure a pressure drop fully compatible with the operation of the safety device, under both saturated and superheated steam conditions.
SECURE SEALING
The double O-ring sealing at the body junction prevents any form of leakage, even under challenging working conditions.
