* - AVK International

For water, ductile iron/reinforced polyamide, DN50-80

Datasheet
Certificates
Product video
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AVK headquater in Skovby Galten, Denmark

Contact

AVK International A/S

Bizonvej 1, Skovby, 8464 Galten, Denmark

Combination air valve for water and neutral liquids to max. 60°C (temporarily up to 90°C)

AVK combination air valves are combined automatic and air vacuum valves. The automatic air release function releases accumulated air from the system while it is under pressure. The air and vacuum function discharges and admits large volumes of air during the filling or draining of pipelines. The valve will open to relieve negative pressures whenever water column separation occurs.

Variant 701/50-003
Connection:	Flanged
Material:	Ductile iron / reinforced polyamide
DN:	DN50 - DN80
PN:	PN16

Features

Orifice sizes:
Air and vacuum DN 50: 794 mm² – automatic 12 mm²
Air and vacuum DN 80: 1809 mm² – automatic 12 mm².
The enlarged orifice is less exposed to obstruction by debris
The orifice in the automatic valve releases large volumes of air at high flow rates when the line is under pressure
The automatic valve’s rolling seal mechanism design is less sensitive to different pressures than a direct float seal, thus enabling a one size orifice for a wide pressure range
Reliable operation reduces water hammer incidents
Dynamic design allows for high velocity air discharge while preventing premature closure
Special orifice seat design with a combination of bronze and EPDM rubber ensures long-term maintenance-free operation
The discharge outlet enables removal of excess fluids
Air and vacuum air valve with body and cover of ductile cast iron with blue fusion bonded epoxy coating in compliance with DIN 3476 part 1 and EN 14901
Automatic valve of high-strength composite material
Float of polycarbonate
With connection flange or BSP thread
Working pressure range: 0.2 – 16 bar

Downloads

Datasheet

Installation

Animation

AVK air valves for water ENG.mp4

Outline drawings

Certificate(s)

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AVK ref. no.	DN mm	Connection	Product PN Class	L mm	H3 mm	C mm	Theoretical weight/kg
701-050-50-11003	50	50 MM	PN16	173	293	1½" BSP	6.4
701-051-50-91003	50	2" BSP	PN16	173	306	1½" BSP	4.3
701-080-50-11003	80	80 MM	PN16	211	328	2" BSP	13

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Components

1.	Body	PA, reinforced
2.	Discharge outlet	PP
3.	Rolling seal	EPDM rubber
4.	Clamping key	PA, reinforced
5.	Float	Foamed PP
6.	O-ring	NBR rubber
7.	Base	PA, reinforced
8.	Strainer	Polyamide
9.	Cover	Ductile iron
10.	Orifice seat	Bronze
11.	Orifice seal	EPDM rubber
12.	O-ring	NBR rubber
13.	Bolt assembly	Steel, zinc plated
14.	Body	Ductile iron
15.	Float	Polycarbonate