Product data sheet
Valve
2-977-23-0804-8505-NG,
July 12, 2026
Seat Valve pneum. direct
Series 2/977-08-ATEX
Valve 2/977-23/0804/8505-NG
The Type 2/977 2/2-way angle seat valves are designed for use in hazardous areas and are certified in accordance with ATEX II 2GD c 04 ATEX D 042 X, making them suitable for applications in both gas- and dust-explosive atmospheres. The valves are pneumatically actuated and require an external pilot air supply of 4 to 10 bar for operation. They feature a robust and proven design combined with fast response times, ensuring reliable performance in demanding industrial applications.
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Valve 2/977-23/0804/8505-NG
Datasheet explicit
Datasheet universal
datasheet 63-08
Instructions
Manual - Valves electropneumatic (DE/EN)
Certificates
EU - Certificate of Conformity - pressure controlled valves
EU - Certificate of Conformity - pressure controlled valves
Videos
| Version | 2/977- | |
| Type of valve | Seat Valve pneum. direct | |
| Connection type, valve seat | 23 | G1/2 13mm |
| Kv-value (Δp = 1 bar H₂O) | 3.5 m³/h | |
| Housing | 08 | AISI 316 |
| Sealing | 04 | PTFE |
| Function | 8 | OPEN with spring |
| Design | 5 | Actuator nickle plated |
| Actuator size | 05 | ⌀50 |
| Actuator volume | 60 cm³ | |
| Valve option | NG | NPT connection |
| Pressure rating | PN40 | |
| System pressure | 0 - 40 bar (the max. operating pressure requires a control pressure of min. 6 bar) | |
| Control pressure | 4 - 10 bar Oil-free/oil-containing, clean compressed air, max. +50°C | |
| Temperature Medium | from -40 °C to 200 °C | |
| Temperature Environment | from -10 °C to 60 °C | |
| Mounting position | in any position | |
| Specific use case | Closed system (includes open system) | |
| scope of delivery | 1 valve |
Not applicable
| Valve option | NG | NPT connection |
| Description | Conical internal thread | |
| Leakage rate | A - EN 12266-1 [Test medium air or nitrogen, 20°C room temperature] | |
| REACH-RoHS conformity | REACH Yes | RoHS Yes | |
| Net weight | 1.3 kg | |
| Customs export | Customs tariff number 84812090; Country of origin Germany; ECCN (US): N; AL: N |