Products

Drain Valves & Breathers (Zone 1 and 2) UVB/UVD

The UV drain valves and breathers are normally used in the chemical and petrochemical plants, off-shore platforms, refineries and any other industry where hazardous atmospheres (gas and combustible dust) are potentially present.

The drain valves and breathers are specially recommended for tropical environment where the phenomenon of water condensation mixed with chemical agents is the first cause of corrosion of electrical components inside the enclosures.

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Customers can still purchase even if there is no stocks available

Unit Of Measurement (UOM):

The material used to manufacture drain valves and breathers UV series have been studied to allow the maximum protection against the highly corrosive agents present in these industries:

  • bushing and shaft, as components directly involved into the explosion proof protection, are made of
    stainless steel AISI 316
  • internal o-ring of silicone
  • external gasket of silicone
  • adaptor for thin wall enclosures (≤ 8 mm.) and locknut of stainless steel AISI 316

product
code

ØIP RatingFor use onDescription
UVB 3/8” NPT IP66 Ex d enclosures Lockable breather unit (NPT)
UVBM M16 IP66 Ex d enclosures Lockable breather unit (metric)
UVDME M20 Maintain IP rating of enclosure Ex e enclosures Lockable drain valve UVDM complete with adaptor kit 
UVXE M20 - Ex e enclosures Adaptor kit for UV with metric thread to install on Ex e enclosures

The UV drain valves and breathers are normally installed on Ex d and Ex e enclosures. Both models UVB and UVD can be used as a combination drain and breather. The UVB model is equipped with internal o-ring to allow an IP66 protection to the enclosure when not in use.

The material used to manufacture drain valves and breathers UV series have been studied to allow the maximum protection against the highly corrosive agents present in these industries:

  • bushing and shaft, as components directly involved into the explosion proof protection, are made of
    stainless steel AISI 316
  • internal o-ring of silicone
  • external gasket of silicone
  • adaptor for thin wall enclosures (≤ 8 mm.) and locknut of stainless steel AISI 316

The UVB - UVD has a double marking Ex d and Ex e to be suitable for every kind of installation.

The installation of drain valve on bottom and breather on top side of enclosure is granting the most complete solution against water condensation since the continuous ventilation minimizes the phenomena.

The sole installation of valve at the bottom with the combined function of drain and breather is giving, anyway, a good result and since the water penetration is practically impossible due to installation point, the IP66 protection is guaranteed also with the UVD model (always open).

certificate number: IMQ 11 ATEX 029 U      TC RU C-IT.AA87.B.00509
marking: Ex-proof Logo II 2GD Ex d IIC Gb Ex e IIC Gb Ex tb IIIC Db
ambient temperature: –60°C +60°C
degree of protection: IP66 / IP6X
conformity: Directive ATEX 2014/34/EU TP TC 012/2011
standards: IEC-EN60079-0 IEC-EN60079-1 IEC-EN60079-7 IEC-EN60079-31
ГОСТ 31610.0 ГОСТ IEC 60079-1 ГОСТ Р МЭК 60079-7 ГОСТ Р МЭК 60079-31
category: suitable for Zone 1 - 21 (gas) and Zone 2 - 22 (dust)

UVB - UVBM Lockable drain valve and breather unit with internal o-ring for IP66 protection when closed. Recommended use as breather on top side for outdoor installations.

UVBME - UVDME Drain valve based on UVBM and UVDM models complete with adaptor kit to be installed on Ex e enclosures with wall thickness range from 0.8 to 8 mm.