Type BMH Sleeved Plug Valves

Special valve for safe flushing of pipe systems

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

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SPEC SHEET
CERTIFICATE
A close-up image of a shiny metallic manual valve component with a handle and various adjustable screws and bolts on a white background.
Design Features
  • 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
A pressure-temperature diagram distributed by a valve distribution company in Louisiana features multiple curves representing various sleeve materials like ptfe, ptfe (virgin), and ptfe (graphite), with temperature along

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

Materials Type MGZ
• Stainless Steel 1.4408, ASTM A351 CF8M
• other materials on request

Materials Type MBZ/MB
• Special Materials Titan, Nickel, Monel, Tantal, Alloy…

Materials Type WA
• Stainless Steel 1.4408, ASTM A351 CF8M

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

Materials Type WA
• Stainless Steel 1.4408, ASTM A351 CF8M

Sealing Systems

Standard sealing for all major applications;
Tmax 230°C

Type STD

Close-up of a mechanical apparatus with labels highlighting its features, including primary sealing type with a PTFE sleeve, secondary sealing with a V-diaphragm, thrust collar, and stainless steel diaphrag

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

Type FSN

A detailed diagram of a pipe sealing system with labels indicating three types of sealing: primary safety sealing, secondary sealing, and tertiary safety sealing, provided by an industrial gasket solutions provider in Baton Rouge.

Firesafe sealing (API 607) with graphite packing for additional
stem sealing; Tmax 230°C

Type FS

Close-up of a firesafe (API 607) type FS valve, tailored for fluid monitoring solutions, highlighting its components like primary sealing, secondary delta graph (PTFE), and tertiary graphite

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

Diagram depicting a firesafe safety sealing device (api 607) type fsn-sl, with annotations showing primary, secondary, and tertiary sealing components, designed for fluctuating sealing temperatures up to 280

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

Type CA

Close-up of a mechanical valve featuring three types of sealing: primary with stainless steel diaphragm, secondary with v-diaphragm and ptfe packing, and tertiary with ptfe only, indicated by

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

Type CASN

Diagram of a chemical safety sealing system with labels indicating three sealing tiers including ptfe packing, custom delta-v diagram cover, and stainless steel diaphragm.

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

Type CASN-SL

Illustration of a chemical safety sealing system (type casn-sl) by an industrial gasket solutions provider in Baton Rouge, detailing various components like live loaded disc springs, thrust collar, and multiple sealing
Port Forms
Diagram illustrating a technical piping system setup with labeled components such as switch boxes, cardanic couplings, and valves from a valve distribution company in Louisiana, connected by lines showing flow direction, with annotations and
Dimensions

on request

Actuation

1 Locking Devices
Pilot valve combinations, pad lock eyelets, linear key conception, indexing plunger arrestor.

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

3 Actuators
Actuators for mounting-flange acc. to DIN ISO 5211

NEW: Pneumatic actuator AIR GEAR for plug valves with high torque ≥150.000 Nm

4 Ratched coupling
To usw on multiport valves with standard 90° actuator for bigger switchpositions than 90°

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