* - AVK International

For water, ductile iron/reinforced polyamide, DN 100-200

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AVK headquater in Skovby Galten, Denmark

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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 701/50-020
Connection:	Flanged
Material:	Ductile iron / reinforced polyamide
DN:	DN100 - DN200
PN:	PN16

Features

Orifice sizes:
Air and vacuum DN 100: 3317 mm² – automatic 12 mm²
Air and vacuum DN 150: 7850 mm² – automatic 12 mm²
Air and vacuum DN 200: 17662 mm² – automatic 12 mm²
Air and vacuum DN 250: 31400 mm² – automatic 12 mm²
Air and vacuum DN 300: 49087 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 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

Certificate(s)

Installation, Operation & Maintenance

Animation

AVK air valves for water ENG.mp4

Outline drawings

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AVK ref. no.	DN mm	Product PN Class	L mm	H3 mm	C mm	Theoretical weight/kg
701-100-50-11003	100	PN16	382	342	63,5 MM	26
701-150-50-11003	150	PN16	399	432	90 MM	43
701-200-50-01003	200	PN10	553	560	90 MM	117
701-200-50-11003	200	PN16	553	560	90 MM	117

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Components

1.	Body	PA, reinforced
2.	Rolling seal	EPDM rubber
3.	Clamping key	PA, reinforced
4.	Float	Foamed PP
5.	O-ring	NBR rubber
6.	Base	PA, reinforced
7.	Cover	Ductile iron
8.	Valve seat	Bronze
9.	O-ring	PA, reinforced
10.	Bolt assembly	Steel, zinc plated
11.	Float	PC / stainless steel
12.	Basket	PP
13.	Body	Ductile iron