Air Vent Valve IAV-N300

Description

• Design standard : BS EN 1074-4
• Threaded end connection : ANSI B1.20.1 / NPT
• Standard for pressure test : BS EN 12266

• Simple float operated valve that allows  bleeding of air from piping systems without allowing water (liquid) to escape.
• When the valve chamber is empty the float remains in the lower position. In this position the valve is open & thus allows air to escape. As water enters the chamber  it lifts the float. Finally when chamber is full of water the float is in upper position and the valve is closed thus preventing water from leaking out.
• The float is made from stainless steel for longer service life.
• The rubber seat offers good sealing to prevent leakage.

• For general and industrial services
• Applicable medium : water, oil, gas & steam

  No.	Part	Material
  1	Body	Ductile iron
  2	Float ball	Stainless steel
  3	Bushing	Brass
  4	Rubber seat	EPDM
  5	Pivot pin	Stainless steel
  6	Seat	Brass
  7	Gasket	Stainless steel
  8	O-ring seal	EPDM
  9	Hexagon bolt	Mild steel (hot dip gal)
  10	Cover	Ductile iron
  11	Nipple	Brass
  12	Screw	Stainless steel
  13	Hexagon bolt	Stainless steel
  14	O-ring seal	EPDM
  15	O-ring seal	EPDM

  Test Requirement
  Working Pressure	300 PSI (21 Bar)
  Shell Test Pressure	450 PSI (31 Bar)
  Applicable Temperature	<80 °C

  Dimension(mm)

  Size	A	H	C	PTN	Wt(Kg)
  DN15	120	155	60	1/2″	300 PSI (21 Bar)
  DN20	120	155	60	3/4″	450 PSI (31 Bar)
  DN25	120	155	60	1″	< 80