- Van Giảm Áp DM 555 ATEX H2
- Model: DM 555 ATEX H2
- Hãng: MANKENBERG
Kết nối DN: 15-50
Kết nối G: 1/2 - 2
Áp suất đầu vào: 40 bar
Áp suất ngược: 0,5 - 20 bar
Kvs-value: 1,3 - 7,5 m³ / h
Nhiệt độ: -40 đến 200 ° C-
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PRESSURE CONTROL
Pressure reducing valve DM 555 ATEX H2
Universal valve for potentially explosive atmospheres
Technical data
Connection DN: 15 - 50
Connection G: 1/2 - 2
Nominal pressure PN: 40
Inlet pressure: 40 bar
Back pressure: 0.5 - 20 bar
Kvs-value: 1.3 - 7.5 m³/h
Temperature: -40 up to 200 °C
Medium liquid, gases and steam
*RT = -10 °C up to + 50 °C
Description
Self-acting pressure reducers are simple control valves offering accurate
control while being easy to install and maintain. They control the pressure
downstream of the valve without requiring pneumatic or electrical control elements.
The DM 555 ATEX H2 pressure reducing valve is a spring-loaded proportional control valve for universal application at small and medium flow rates.
The valve body and medium-wetted internal parts are made of stainless
steel 316L featuring excellent corrosion resistance. The valve cone is fitted
with a metallic or soft seal.
The outlet pressure to be controlled is balanced across the control unit by
the force of the valve spring (set pressure). As the outlet pressure rises
above the pressure set using the adjusting screw, the valve cone moves towards the seat and the volume of medium is reduced. As the outlet pressure
drops, the valve control orifice increases; when the pipeline is depressurised, the valve is open. Rotating the adjusting screw clockwise increases
the outlet pressure.
These valves are no shut-off elements ensuring a tight closing of the valve.
In accordance with DIN EN 60534-4 and/or ANSI FCI 70-2 they may feature
a leakage rate in closed position in compliance with the leakage classes III
or V, optional IV.
Standard
» ASTM A351 GRADE CF8M
» Body and medium-wetted internal parts made of stainless steel 316L
» DIN or ANSI flanges, threaded sockets G or NPT
» Non rising adjusting screw
» Quick-release body clamp ring
Special features of the ATEX version
» Compliance to ATEX directive 2014/34/EU and DIN EN ISO 80079-36
» Adjusting screw lock
» Grounding lug at the valve body
» Partial use of low-spark material
Options
» Various seal materials suitable for your medium
» Special connections:
ANSI or JIS flanges, other connections on request
» Special versions on request
Technical specification
| ATEX marking |
| Ex II 2G Ex h IIB + H2 85°C...230°C GB X |
| Kvsvalues [m3/h] | ||||
| nominal diameter | DN 15 - 50 | DN 25 - 50 | ||
| m³/h | 1.3 | 2.4 | 4.2 | 7.5 |
| Setting ranges [bar], nominal pressure | ||||
| setting range bar | 0.5 - 2 | 1 - 4 | 2 - 7 | 5 - 16 |
| Nominal pressure | PN 40/20 |
| max. operating pressure [bar] at operating temperature [°C] | ||||
| T | -10 - 50 | 100 | 130 | 200 |
| p | 40 | 37 | 35 | 31 |
