RH Series Valves

High-Performance AZ Control Plug Valves

DIN-EN: DN 15 – 600 / PN 10 – 40
ASME: NPS ½“ – 24“ / class 150
Einsatzbereich: -30 < T < 230/280°C, Vakuum 10-8 mbar

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SPEC SHEET
CERTIFICATE
3D rendering of a mechanical cutaway view showing the internal components of an industrial valve, highlighting its complex design and structure, tailored for fluid monitoring solutions.
Design Features

Design Characteristics

  • different KVS values
  • individual control characteristics
  • free passage possible with open valve
  • equal percentage or linear characteristic line
  • cost-effective automation
  • readily reproducible control position

The construction of the control valves Type RH is based on our standard cavity-free plug valve with PTFE-sleeve. A wide range of materials for housings, plugs, as well as for sleeves or linings are available for different areas of application. If required, the control valves can also be supplied with a heating jacket.

Close-up of a stainless steel control scale with measurement markings, mounted on an industrial gray background.
PT-Diagram
A line graph titled "General Pressure-Temperature Diagram" from a fluid control solutions provider in Louisiana, showing the performance of various sleeve materials like PTFE (virgin, with glass, and with

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
• Ductile cast iron ENJS 1049, ASTM Gr 60-40-18 / A395
• Alloy
• Monel
• Nickel
• Zirconium
• Titan
• Tantal
• other materials on request

Sealing Systems

Type STD

Standard sealing for all major applications;
Tmax 230°C

Illustration of a mechanical sealing device, labeled with components such as the primary sealing type with a PTFE sleeve, a thrust collar, delta V-diaphragm, stainless steel diaphragm,

Type FS

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

Diagram highlighting the components of a firesafe (api 607) type fs valve, showing primary, secondary, and tertiary custom sealing solutions with labels, set against a blurred background.

Type CA

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

Close-up of a chemical sealing system from Custom Sealing Solutions Baton Rouge, with labels indicating various components: thrust collar, packing (ptfe), v-diaphragm, and stainless steel diaphragm

Type FSN

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

Diagram showing the layers of a firesafe sealing system for a valve, provided by an industrial supply company in Louisiana, including primary, secondary, and tertiary sealings with component labels and temperature specifications.

Type FSN-SL

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

Technical diagram presented by a valve distribution company in Louisiana, showing parts of a firesafe safety sealing system, type fsn-sl, with annotations detailing components like thrust collar, live loaded disc springs, and

Type CASN

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

Diagram illustrating the layers of a chemical safety sealing system with adjustable PTFE plugs for temperature fluctuations, detailing primary, secondary, and tertiary sealings with their components, provided by an industrial gasket solutions

Type CASN-SL

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

Diagram illustrating a piping system with labeled components such as switch boxes, stem extensions, actuators, and flanges, depicting connections and configurations for valves and couplings provided by a valve distribution company in Louisiana
Port Forms

As standard, there are ten plugs forms available per valve size, consisting of five linear and five equal percentage control characteristics. Type “EXTRA” full bore plug valves with equal percentage control characteristics are recommended for very large flow rates (only RH and RH-S types).

Furthermore, bespoke plug forms can be calculated and designed according to customer-specific requirements that combine, for example, control properties and free passage.

Characteristics

Model structure
The data was determined by flow simulation and based on the VDI/VDE 2173 with a permissible deviation of +/- 10% (medium = water 20°C, pressure loss Δp = 1 bar).

Definition Kvs
The Kvs value designates the maximum possible throughput for a valve with a 100% opening

Definition Kv
The flow coefficient Kv [m3/h] is a specific volume flow for the following conditions:
– The pressure loss (Δp) via the valve is 105 Pa (1 bar)
– The medium is water with a temperature between 278 K and 315 K (5°C to 40°C)

Definition Cv
The flow coefficient Cv is a valve flow coefficient that does not correspond to S.I. units. It represents the number of U.S. gallons of water which flow through a valve with a pressure loss of 1 psi (68.95 mbar) at a temperature of 40°F to 100°F (4°C to 38°C) within a minute. Cv = Kv/0,865

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