* - AVK Industrial Nederland

Short, fixed EPDM liner, duplex/rilsan coated disc

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AVK Industrial Nederland BV

Schorsweg 1 8171 ME Vaassen Netherlands

Centric butterfly valve with fixed liner - double flanged short - duplex/rilsan coated disc for water and neutral liquids to max. 110°C

AVK centric butterfly valves with fixed liner feature an outstanding seating concept. The rubber is injection moulded directly on the valve body forming a permanent bond. Consequently, there is no risk of deformation or dislocation of the liner making the valves suitable under vacuum conditions. The combination of the profiled disc edge and the excellent AVK rubber quality ensures maximum durability of the liner.

Variant 75/20-020
Connection:	Flanged
Material:	Ductile iron
DN:	DN50 - DN2000
PN:	PN 16

Features

Bonded vulcanized liner of drinking water approved EPDM with an excellent compression set and thus ability to regain its original shape
Streamlined disc with minimum flow resistance
Profiled disc edge requires minimal deformation of the liner to achieve tight sealing, and results in less wear of the liner
Disc, shaft and conical pin of duplex steel in DN≤200. Disc of rilsan coated ductile iron, and shaft and conical pin of stainless steel in DN≥250
Shaft bearings of PTFE coated steel
Top shaft sealing: DN≤350: Bronze bushing with two EPDM O-rings, DN≥400: EPDM O-ring in bushing fixed with countersunk screws of galvanized steel
Bottom shaft sealing: DN≤350: Plug of galvanized steel with a copper sealing ring, DN≥400: Axial bearing and ring of alubronze and an EPDM O-ring, protected by a cover plate of galvanized steel
Low torques as a result of the profiled disc edge and fixed liner design
Ductile iron body with 200 μ epoxy coating blue RAL 5017

Downloads

Datasheet

Appendix

Certificate(s)

Animation

AVK_centric_butterfly_valve_fixedliner_animation.mp4

Outline drawings

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AVK ref. no.	DN mm	Flange drilling	L mm	H1 mm	H2 mm	F mm	F2 mm	L5 mm	Actuator flange	Theoretical weight/kg	Notes
75-0050-20-223002614200	50	PN10/16	108	118	63	10	34	12	90	8.5	Disc, shaft and cross pin in duplex stainless steel
75-0065-20-223002614200	65	PN10/16	112	126	71	10	34	12	90	9.0	Disc, shaft and cross pin in duplex stainless steel
75-0080-20-223002614200	80	PN10/16	114	133	78	10	34	12	90	11	Disc, shaft and cross pin in duplex stainless steel
75-0100-20-223002614200	100	PN10/16	127	147	98	12	34	12	90	13	Disc, shaft and cross pin in duplex stainless steel
75-0125-20-223002614200	125	PN10/16	140	160	109	12	34	12	90	17	Disc, shaft and cross pin in duplex stainless steel
75-0150-20-223002614200	150	PN10/16	140	180	133	16	34	14	90	23	Disc, shaft and cross pin in duplex stainless steel
75-1200-20-225101314200	1200	PN10	470	855	870		85	35	415	1300
75-1400-20-225101314200	1400	PN10	530	955	970		85	35	415	1700
75-1500-20-225101314200	1500	PN10	600	1029	1037		100	50	475	2100
75-1600-20-225101314200	1600	PN10	600	1079	1096		100	50	475	2500
75-1800-20-225101314200	1800	PN10	670	1176	1187		120	50	475	3500
75-2000-20-225101314200	2000	PN10	760	1276	1287		140	50	475	4000

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Components

1.	Shaft	Stainless steel, duplex
2.	Bushing	Bronze
3.	O-ring	EPDM rubber
4.	Body	Ductile iron GJS-400-15
5.	Bearing	Steel, PTFE coated
6.	Conical pin	Stainless steel, duplex
7.	Disc	Ductile iron/duplex SS
8.	Shaft	Stainless steel, duplex
9.	Liner	EPDM rubber
10.	Bearing	Steel, PTFE coated
11.	Seal ring	Copper
12.	Plug	Steel, galvanized
13.	Screw	Steel, galvanized
14.	Ring	Alu-bronze
15.	O-ring	EPDM rubber
16.	Thrust bearing	Alu-bronze
17.	Cover plate	Steel, galvanized
18.	Screw	Steel, galvanized

Test/Approvals

Hydraulic test according to EN 1074-1 and -2 / EN 12266
Approved according to KIWA Certificate K 6070/08
Approved according to DIN-DVGW Certificate NW-6201DL0202

Standards

Face-to-face dimension according to EN 558, Series 13
Flange drilling to EN1092, PN10/16

AVK CENTRIC DOUBLE FL. BUTTERFLY VALVE, PN 10/16