Sampling and Air Bleed Valve deflagration proof
Function and Description
The PROTEGO® ZE/WU 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 vapour/air mixtures ignite during venting, the valve prevents flash back into the system to be protected.
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 and female threaded connection (pipe thread G½“up to G1“) and the flame arrester (2) with cover (3). As an optional elbow fitting (4) is available as outlet for sampling. The flame arrester (2) consists of the flame arrester cage with FLAMEFILTER®.
The valve opens manually with the hand wheel. For sampling, a suitable container is required.
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 vapour/air mixtures of explosion groups up to IIB (NEC group D to C) up to a service temperature of +60°C / 140°F and an absolute operating pressure up to 1.1 bar / 15.9 psi.
Type-approved in accordance with the current ATEX Directive and EN ISO 16852 as well as other international standards.
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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
* 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
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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®.
* 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
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Explosion group
MESG Expl. Gr. (IEC / CEN) Gas Group (NEC) ≥ 0,50 mm IIB B Type of connection
Pipe thread DIN ISO 228 T1 DIN Design Types and Specifications
There are two designs available:
Sampling and air bleed valve, standard design Sampling and air bleed valve with elbow ZE/WU - 1
Special designs for higher pressures are available ZE/WU - 2
Optionally available with fl ange connection (see fi gure)
* 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
