Válvula macho para controle

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

Especificações
Certificado
Orçamento

Design Features

Características construtivas

  • Valores de KVS personalizados
  • Características individuais de controle
  • Passagem total disponível
  • Curva característica igual porcentagem ou linear
  • Automação econômica
  • Posições de controle facilmente reproduzíveis

As características de construção das válvulas de controle RH e RH-A são as mesmas das válvulas macho sem espaço morto, com bucha em PTFE
ou revestidas em PFA/FEP. Diversos materiais para construção do macho e do corpo são disponíveis, atendendo assim as mais variadas aplicações.
Caso necessário também podem ser fornecidas com camisa de aquecimento. Kontruktion-GB-control-scale


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


Sealing Systems

Standard sealing for all major applications;
Tmax 230°C

Type STD

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

Type FSN

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

Type FS

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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

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

Type CA

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

Type CASN

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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

Port-forms_GB-control 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

Type RH, linear control characteristics Techn-Daten_GB_control_RH-1 Type RH, equal percentage control characteristics Techn-Daten_GB_control_RH-2 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 (0.689 mbar) at a temperature of 40°F to 100°F (4°C to 38°C) within a minute.  Cv = Kv/0,865


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 […]