Special valve for safe flushing of pipe systems

DIN-EN: DN 25 / PN 10
ASME: NPS 1“ / class 150

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Special valve for safe flushing of pipe systems

Design Features

Design Characteristics

  • free of cavities
  • maintenance free – self lubricating
  • mounting-flange for actuators acc. to DIN ISO 5211
  • easy accessible adjustment of the plug, even with mounted actuator
  • vacuum tight
  • fugitive emmission resp. clean air act certified (TA-Luft 2002 approval)
  • Directive 2014/68/EU
  • Firesafe design API 607 ISO 10497
  • FDA conformity

Description
Pipe Systems in chemical and petrochemical plants are usually purged with flushing fluids such as
water, steam, air or nitrogen. After the flushing process a safe depressurizing is necessary. For this
purpose AZ developped the type “BMH” with features easy and simple in operation:

The special plug form, with positive overlap, allows during the quarter turn to close the flushing fluid supply and then to depressurize the flushing hose automatically. This ensures maximum safety for operators and environment.The valve is conform to TA-Luft.

PT-Diagram

PT-Diagramm-2015-GB

Operating temperatures < -30°C and > 220 °C have to be checked and approved by AZ according to the operating conditions.

Besides the P/T value of the sleeve the limitations of the valve bodies also have to be considered. Please refer to the EN 12516-1 resp. ASME B16.34 in order to choose a proper pressure rating (PN/class). The shown values refer to austenitic stainless steel 1.4408 (A351 Gr. CF8M).

1) For operating temperatures below -10°C low temperature / austenitic steels are required.
2) Sleeve: There are different sleeve materials / compounds available.

Materials

Standard body materials
• Carbon Steel 1.0619, ASTM A216 WCB
• Stainless Steel 1.4408, ASTM A351 CF8M
• Stainless Steel 1.4308, ASTM A351 CF8
• Unalloyed stainless steel casting (low Temp.) 1.1138, LCC/LCB/A352

Standard plug materials
• Stainless Steel 1.4408, ASTM A351 CF8M
• Stainless Steel 1.4308, ASTM A351 CF8

Special materials
• Alloy
• Monel
• Nickel
• Zirconium
• Titan
• Tantal
• other materials on request

Sealing Systems

Standard sealing for all major applications;
Tmax 230°C

Type STD

read more [...]		Firesafe safety sealing (API 607) for fluctuating temperatures
with 3x graphite packing (adjustable) for additional
stem sealing; Tmax 280°C

Type FSN

read more [...]
Firesafe sealing (API 607) with graphite packing for additional
stem sealing; Tmax 230°C

Type FS

read more [...]		Firesafe safety sealing (API 607) for fluctuating temperatures
with 3x graphite packing (live loaded disc springs) for additional
stem sealing; Tmax 280°C

Type FSN-SL

read more [...]
Chemical sealing to prevent fugitive emission of aggressive and toxic media
with PTFE packing for additional stem sealing; Tmax 230°C

Type CA

read more [...]		Chemical safety sealing for fluctuating temperatures
with 3x PTFE packing (adjustment) for additional stem sealing;
Tmax 230°C

Type CASN

read more [...]
Chemical safety sealing for fluctuation temperatures
with 3x PTFE packing (live loaded disc springs) for additional
stem sealing; Tmax 230°C

Type CASN-SL

read more [...]

Port Forms

Kuekenform-BMH-ILplus

Dimensions

on request

Actuation

actuation-valves-met

1 Locking Devices
Pilot valve combinations, pad lock eyelets, linear key conception, indexing plunger arrestor.
read more […]

2 Plug stem extension
Solid construction in stainless steel with T-wrench, Standard extension 100 mm or 150 mm, non standard lengths are available on request
read more […]

3 Actuators
Actuators for mounting-flange acc. to DIN ISO 5211
read more […]

NEW: Pneumatic actuator AIR GEAR for plug valves with high torque ≥150.000 Nm
read more […]

4 Ratched coupling
To usw on multiport valves with standard 90° actuator for bigger switchpositions than 90°
read more […]

5 Cover extension
Solid construction in stainless steel, Standard extension 100 mm or 150 mm high, non standard lengths are available on request . Hexagonal bolts on adjustment ring freely accessible. Note: Don’t use with sealing FSN/FSN-SL and CASN/CASN-SL
read more […]