VL(A)-521B
| Nominal size | DN8 to DN100 1/4" to 4" |
| Nominal pressure | PN63 |
| Port | full bore |
| Face-to-face length | according to DIN 3202-S13 (old) according to DIN EN 12982-ETE67 (new) |
| Connection | Butt-weld ends - according to DIN EN 12627 - Abbrev. "BW" ends |
| Design | - ISO-Top mounting flange according to ISO 5211 - Antistatic design - 4-sided shift shaft - 3-piece modular design (building block system) |
| Temp. range | -10°C to +200°C (Note pressure / temperature diagram) |
| Standard | - TA-Luft |
| - CE according to Pressure Equipment Directive 2014/68/EU | |
| - ATEX 2014/34/EU | |
| Optional* | - FDA |
| - EC 1935/2004 (Food) |
* with corresponding configuration
ISO-Top mounting flange according to ISO 5211
Suitable for mounting the hand lever as well as stem extensions. In particular, the automation of ball valves using pneumatic or electric actuators of all brands with compatible connections according to ISO 5211, as well as for accessories such as limit switches, etc., makes ball valves with ISO-Top extremely versatile in application.
Modular building block system
One ball valve system – countless possibilities.
Whether manually operated with threaded connections on both sides, or automatable with stem extensions and two different connection ends: everything is possible with this modular building block system.
Especially regarding sealing technology, no other type of ball valve is as versatile in its application.
DIN - Face-to-face lengths
All ball valves in this series have a standardized face-to-face length (ETE/FTF) according to the standards:
- DIN EN 16722 M3 (current)
- DIN 3202 M3 (old)
This offers enormous advantages during the planning phase, pre-assembly, or when replacing units in the event of damage.
Inline Service
Due to the design, replacing seals or spare parts while the valve is installed is straightforward. Only one tie bolt needs to be loosened, and all others removed.
This allows the center section, including all wear parts, to be simply swung out. During reassembly, the edges of the body and ball seals must be positioned carefully before swinging the center section back into place. Tighten the tie bolts – and you're done.
EPI Product Continuity
The ball valves in this product series are all based on the same system, which has been continuously developed and expanded over the years.
As a result, even for the oldest EPI ball valves in this series, the center sections, connection ends, or replacement seals can be exchanged for components from current production batches.
| Seals: | ||
| RPTFE | PTFE reinforced with 15% glass fibers | |
| PTFE - FDA | PTFE with FDA approval and certification | |
| PTFE - SS | PTFE reinforced with 50% stainless steel | |
| PTFE - SS - FDA | PTFE reinforced with 50% stainless steel and FDA approval | |
| PTFE - C | PTFE reinforced with 25% carbon | |
| PTFE - TA | Cavity-filled PTFE seals | |
| PTFE - TFM | TFM1600 | |
| PEEK | Ball and body seals made of PEEK | |
| Body: | ||
| NA | Stem without antistatic function | |
| PRB | Pressure relief hole through the ball | |
| SD | M5 or M6 thread in the stem for accessory mounting | |
| Connection: | ||
| B-ISO | Butt-weld ends according to ISO 1127 | |
| B-DIN | Butt-weld ends according to DIN 11850 R2 | |
| B-ASME | Butt-weld ends according to ASME BPE | |
| OB-"xxx" | Orbital welding ends according to standard xx (ISO, DIN, ASME) | |
| Accessories: | ||
| M-OC | Cast hand lever in 1.4404 (SS316L) type Octagon | |
| M-LD | Electro-polished cast hand lever with eyelet for locking capability, matching ISO-Top holes | |
| SE | Stem extension 100 mm for ISO-Top | |
| Others: | ||
| FG | Food grade version (food-safe lubricants) | |
| OGF | Oil and grease-free version | |
| SF | Silicone-free version (silicone-free lubricants) | |
| OGSF | Oil, grease, and silicone-free version | |
Further options or special designs according to customer specifications are of course also possible upon consultation.
Please contact us!