Design Features
Características construtivas
- Sem espaço morto
- Livre de manutenção – autolubrificada
- Fácil acesso para o reajuste do macho
- Firesafe design conforme API 607 ISO 10497 (outsite)
- face to face dimensions and flanges acc. to DIN and ANSI
- Certificação TA-Luft 2002
- Também disponíveis com atuadores
As válvulas AZ com sistema de limpeza tipo SP, são normalmente recomendadas
para fluídos que tendem a depositar sedimentos, para fluídos
viscosos, sólidos e que possuem características de cristalização e polimerização.
Exemplo: Alcatrão, Betume, VC+VCM, UREA, etc. Fluidos com estas
características são propensos a incrustar na passagem do macho (quando a
válvula está fechada) podendo inclusive causar a obstrução total da válvula.
Estes problemas podem ser evitados fazendo a limpeza do interior do macho
com um fluido compatível, este tipo limpeza também é recomendado para
processos onde não pode haver a contaminação de um fluido com um outro.
PT-Diagram
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
[table id=20 /]Spülungsarten
Type SP 1 Cross-flushing without connection to any side of the main line (two cross-flushing line connections: 1. intake, 2. outlet). Typ SP 2 Cross-flushing with connection to one side of the main line. Typ SP 3 Indirect flushing through flushing connections provided on the side of the plug. Typ DSK Double flushing combination with port form “T4” Special flushing with bouncing plate on counterside etc. on request 
Dimensions
For geometric reasons, threads are used in the flange bores in a few cases
Actuation
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 […]