ZE/WU
Sampling and Air Bleed Valve deflagration proof
Features
Opening by Hand Wheel
Opening by Hand Wheel
Atmospheric Deflagrations
Provides Protection Against Atmospheric Deflagrations of Product Vapor/Air Mixtures
Any Installation Position
(taking the Set Pressure into Account)
End-of-line Deflagration Flame Arresters
Can Also Serve as Venting and Breathing for Tanks, Equipment Parts, and Pipelines
For Flammable Liquids
Useable for Nearly All Flammable Liquids
Robust Design
Simple and Robust Design
Function and Description
Flame Arrester Venting and Exhausting of Pipelines and Equipment
The PROTEGO® sampling and air bleed valve is used for flame transmission-proof venting of pipelines and equipment that transports or processes flammable liquids and for taking liquid samples. The valve incorporates an end-of-line deflagration flame arrester. Should the gas/air mixtures or product vapor/air mixtures ignite during venting, the valve prevents flash back into the protected system.
Main Component – PROTEGO® Flame Arrester Unit
The Sampling and Air Bleed Valve PROTEGO® ZE/WU consists of the threaded angle valve in pressure stage PN25 (1) with hand wheel as standard design, a female threaded connection (pipe thread G½“up to G1“), and the flame arrester (2) with cover (3).
Optionally, an elbow fitting (4) is available as outlet for sampling. The PROTEGO® Flame Arrester (2) consists of the Flame Arrester casing with FLAMEFILTER®.
The valve opens manually with the hand wheel. For sampling, a suitable container is required.
For Explosion Group IIB
The simple and sturdy design makes it suitable for nearly all flammable liquids. This device can be installed in any position.
Flame transmission protection is guaranteed against atmospheric deflagrations of gas/air mixtures or product vapor/air mixtures of explosion groups up to IIB IIB (NEC group D to C) up to an operating temperature of +60°C / 140°F and an absolute operating pressure of up to 1.1 bar / 15.9 psi.
EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Product Data
Dimensions
| DN | a | b | Ø c | d | e | f |
| G½" | 40 / 1.57 | 140 / 5.51 | 70 / 2.76 | 80 / 3.15 | 96 / 3.78 | 67 / 2.64 |
| G¾" | 50 / 1.97 | 165 / 6.50 | 85 / 3.35 | 80 / 3.15 | 89 / 3.50 | 67 / 2.64 |
| G1" | 65 / 2.56 | 200 / 7.87 | 100 / 3.94 | 95 / 3.74 | 104 / 4.09 | 67 / 2.64 |
Dimensions in mm / inches
Explosion group
| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
| ≥ 0,50 mm | IIB | B |
Material
| Design | A |
| Threaded angle valve | Stainless Steel |
| Elbow | Stainless Steel |
| Cover | Stainless Steel |
| FLAMEFILTER® | Stainless Steel |
The valves must be sufficiently resistant to corrosion through the gas/air mixtures or product vapour/air mixtures. This applies mailnly to the FLAMEFILTER®.
Type of connection
| Pipe thread DIN ISO 228 T1 | DIN |
* position of drilling holes on flange connection as well as thickness upon request for size DN 15 / ½", DN 20 / ¾", DN 25 / 1", DN 32 / 1¼", DN 40 / 1½" and pressure nominal PN 25/40 resp. PN 100 available