Two way plug valve with safety stuffingbox packing, special design for HF alkylation, Monel materials
Type ISO-FS-HF with Fire Safe sealing
Type ISO FSN-HF with triple safety sealing for fluctuating temperatures
ASME: NPS ½“ – 8“ / class 150 / 300
PT range: -30 < T < 230/280°C, vacuum 10-8 mbar
Design Features
Design Characteristics
- free of cavities
- maintenance free – self lubricating
- 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
- fire safe design API 607 / ISO 10497
- special design for hydrofluoric acid (HF alkylation):
– monel body, plug and cover
– Flanges and cover seat painted with special acid detection paint (yellow or orange)
– plug with relief hole
– Cover sealing with stuffingbox packing type “FSN”
– X-ray examination on critical areas
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 material
• Monel, ASTM A494 M35.1
Standard plug material
• Monel, ASTM A494 M35.1
Sealing Systems
| Firesafe safety sealing (API 607) for fluctuating temperatures with 3x graphite packing (adjustable) for additional stem sealing; Tmax 280°C Type FSNread more [...] |
|---|
![read more [...]](/wp-content/uploads/sites/7/2017/12/Sealing-GB-ISO-FSN.png?x26397){kind=link}
Firesafe sealing (API 607) with graphite packing for additional stem sealing; Tmax 220°CTyp FS-HFread more [...] |
|---|
![read more [...]](/wp-content/uploads/2017/02/Sealing-GB-ISO-FS-HF.png?x26397){kind=link}
Plug Forms
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 […]