Olab - Testata

SERIES 40000

SAFETY VALVE WITH PTFE SEAL AND TREATED STEEL SPRING FOR PROFESSIONAL A3-A2L REFRIGERATION SYSTEMS

SERIES 40000
UL

Category: A3-A2L SPECIALIST

Notes:

  • PS: 55 BAR (797 psi)
  • TS: -50°C ÷ +150°C (-58°F ÷ +302°F)
  • LOW-PFAS IMPACT COMPONENT
  • CERTIFICATIONS: UL 207

Technical Data Sheet

OLAB Series 40000 is the safety valve engineered for professional A3–A2L  refrigeration systems, designed to ensure long-term calibration stability, sealing reliability, and mechanical integrity even under extreme thermal and pressure stress. The valve body is made of yellow brass, with a treated steel spring and a PTFE sealing element, chosen specifically for its chemical resistance and anti-adhesive properties. This prevents the sealing surface from sticking to the seat, preserving the factory-set calibration over time and ensuring constant safety performance throughout the valve’s life cycle.

Once the set pressure is calibrated, the adjustment ring is locked in place using a low-viscosity, high-strength threadlocker, which penetrates the threads and prevents any accidental loosening or misalignment. For additional protection, the valve is mechanically sealed with a crimped closure cap, ensuring tamper-proof integrity and preventing unauthorized adjustment.
To guarantee total reliability, each unit is 100% helium tested in OLAB’s advanced testing facility. The laser-marked date and serial number certify that the valve has passed its individual pressure test and provide lifetime traceability of its performance data. Series 40000 is part of the OLAB LOW-PFAS IMPACT COMPONENTS range and is certified according to UL 207, making it the ideal choice for refrigeration systems where safety, sustainability, and performance are non-negotiable.  

Technical features:

  • Safety valve series
  • Yellow brass body
  • Spring in treated stainless steel
  • PTFE seal
  • Designed for professional A3-A2L refrigeration systems

COMPATIBLE A3–A2L REFRIGERANT GASES

HFC, HFO, and HFO/HFC blends: R404A, R407C, R410A, R507, R32, R134a (up to +125°C / 257°F).
HFO and HFO/HFC blends: R1234ze, R448A, R449A, R450A, R452A, R1234yf.
HC: R290, R600, R600a.

Products equipped with HNBR seals must not be installed on systems using HCFCs (R22) or any refrigerants mixed with mineral oils or alkylbenzene lubricants.

Our HNBR compound seals have been specifically designed and manufactured for compatibility with A3 and A2L refrigerant gases (as defined in ASHRAE Standard 34). However, due to the countless variables involved in real-world applications—such as pressure, temperature, and mixing ratios—an application-specific validation on the system is always required.

LONG-LASTING RELIABILITY
The PTFE sealing element prevents sticking to the valve seat, ensuring calibration stability over time—even under thermal and mechanical stress.


SECURE CALIBRATION LOCK
Once calibrated, the adjustment ring is locked in place using a low-viscosity, high-strength threadlocker, which penetrates the threads and prevents any unintentional movement.


TAMPER-PROOF CLOSURE
The valve is sealed with a closure cap, mechanically crimped to ensure maximum security and tamper resistance.


100% HELIUM TESTED
Each unit is individually tested in a state-of-the-art helium facility. Date and serial number are engraved to certify compliance and allow full traceability of recorded performance data.