Automatic large air vent MAXCAL type 501, DN20 (3/4") female thread, made of brass

• DN20 (¾") IG
• With high ventilation performance
• For medium and large heating systems
• Made from corrosion-resistant materials
• With integrated dirt trap for high operational reliability
• Air outlet DN10 (3/8") internal thread connection

Description:

1) Upper connection for drain

2) Protection against external influences

• 3) O-ring with large cross-section

4) Stainless steel screws

5) Lid in pressed brass

• 6) O-ring with large cross-section

7) Valve seat in Viton

8) Stainless steel mudguards

9) Valve stem rolled and chrome-plated

10) Body in pressed brass

11) Floats in stainless steel

Technical data:

• Venting capacity: 120 l/min (at 2.5 bar)
• Operating temperature: 20°C...120°C
• Blow-off pressure: max. 6 bar
• Operating pressure: max. 16 bar
• Housing: Brass
• Internal parts: Stainless steel
• Seals: Viton / EPDM
• Dimensions (H x ø): 158 x 135 mm