3 – Disc spring
4 – L-shaped back-up ring
5 – Ball seal
14 – Additional sealing by FVMQ ring
MATERIALS OF MAIN PARTS
| No. | Climate class N | Climate class NF | |||
| Material code | 02 | 03 – Energy | 01 | 01 – Energy | |
| Steel grade | Carbon steel (1.1151) | Alloy steel (09G2S) | Stainless steel (AISI 321H) | Stainless steel (AISI 321H) | |
| Application | District heating/cooling, Oil and oil products | District heating/cooling, Oil and oil products | Untreated water Non-aggressive media | Chemical industry Aggressive media | |
| 1 | Welding end | Steel 20 (1.1151) | Alloy steel (09G2S) | AISI 321H | AISI 321H |
| 1-01 | Flange | Steel 20 (1.1151) | Alloy steel (09G2S) | AISI 321H | AISI 321H |
| 2 | Body | Steel 20 (1.1151) | Alloy steel (09G2S) | AISI 321H | AISI 321H |
| 3 | Disc spring | Spring steel | Spring steel (zinc-plated) | Spring steel (zinc-plated) | AISI 321H |
| 4 | L-shaped back-up ring | AISI 409 | AISI 409 | AISI 409 | AISI 321H |
| 5 | Ball seal | PTFE+C | PTFE+C | PTFE+C | PTFE+C |
| 6 | Ball | AISI 420, AISI 304, AISI 409 | AISI 420, AISI 304, AISI 409 | AISI 420, AISI 304, AISI 409 | AISI 321H, AISI 304 |
| 7 | Stem | AISI 420 | AISI 420 | AISI 420 | AISI 321H |
| 8 | Stem shell | Steel 20 (1.1151) | Alloy steel (09G2S) | AISI 321H | AISI 321H |
| 9 | Limiting washer | St. 3 | St. 3 | St. 3 | St. 3 |
| 10 | Handle | St. 3 | St. 3 | St. 3 | St. 3 |
| 11 | Washer | PTFE | PTFE | PTFE | PTFE |
| 12 | Nut | Zinc-plated steel with polymer | Zinc-plated steel with polymer | Corrosion resistant steel with polymer | Corrosion resistant steel with polymer |
| 13 | Stem sealing ring | EPDM, FVMQ | EPDM, FVMQ | EPDM, FVMQ | FVMQ |
| 14 | O-ring | FVMQ | FVMQ | FVMQ | FVMQ |
| 15 | Retaining ring | Spring steel | Spring steel | Spring steel | Spring steel |
| 16 | Flange | Steel 20 (1.1151) | Alloy steel (09G2S) | AISI 321H | AISI 321H |
|
Working conditions and features | Working media temp. -40°C to +200°C | Working media temp. -60°C to +200°C High stem for easy PU insulation Seamless pipe | Working media temp. -60°C to +200°C | Working media temp. -60°C to +200°C | |