Check Valves - Öz-Kan Makina

Tilting Check Valves

Slated Seat Check Valves

Tilting Check Valve With Hydraulic Damper

Slanted Seat Check Valves With Hydraulic Damper

Nozzle Type Check Valves

Axial Silent Check Valves

Flap Valves

Foot Valves

Check Valve User Manuals

Tilting Check Valves

Short body, small volume and light weight
Shafts protrude on both sides of the body and allow the lever and counter weight to be mounted on the right or left side, both vertical and horizontal pipeline applications.
Disc swings freely. The disc opening depends on the flow velocity
Adjustable weight offers the adaptability to the individual working conditions.
Metal to metal or resilient seating options.
Maintenance free design.

Diameter

DN 100-1400

Pressure

PN 10-40

Material Properties

PART NO	DESCRIPTION	MATERIAL
1	Body	Ductile cast iron EN-GJS-400-15
2	Disc	Ductile cast iron EN-GJS-400-15
3	Retaining ring	Steel S235JR
4	Sealing ring	EPDM
5	Hex. socket head cap screw	Stainless steel A2
6	Shaft	Stainless steel X20Cr13
7	Key	Steel Ck45
8	Hex. socket set screw	Stainless steel A2
9	Bearing bush	Bronze
10	O-ring	EPDM
11	Cover	Ductile cast iron EN-GJS-400-15
12	Hex. bolt	Stainless steel A2
13	Lever	Steel S235JR
14	Weight	Steel S235JR
15	Key	Steel Ck45
16	Cover	Steel S235JR
17	Bolt	Stainless steel A2

Technical Information

PN 10

PN 16

PN 25

Slated Seat Check Valves

These check valves can be used in all non-return applications.
Better closing characteristics due to the smaller swing angle
of the disc.
Closing time is reduced compared to the other check valve types.
Because of non-extended shaft design, no sealing friction at
the shafts.
No lever and counter weight requirement. Thus dangerous
movement of external parts is eliminated.
Metal to metal or resilient seating options.
Maintenance free design.

Diameter

DN 200-1200

Pressure

PN 10-25

Material Properties

Part No	Description	Material
1	Body	Ductile cast iron EN-GJS-400-15
2	Disc	Ductile cast iron EN-GJS-400-15
3	Retaining ring	Steelk S235JR
4	Sealing ring	EPDM
5	Hex. socket head cap screw	Stainless steel A2
6	Shaft	Stainless steel X20Cr13
7	Hex. socket set screw	Stainless steel A2
8	Bearing bush	Bronze
9	O-ring	EPDM
10	Cover	Ductile cast iron EN-GJS-400-15
11	Hex. bolt	Stainless steel A2
12	Lifting lug	--

PN 10

DN	PN	ØD	ØK	Ød	C	f	ØLxn	L	e1	e2	Weight(KG)
200	10	340	295	266	20	3	23x8	230	370	17	60
250	10	405	350	319	22	3	23x12	250	444	48	75
300	10	455	400	370	24,5	4	23x12	270	484	63	105
350	10	520	460	429	26,5	4	23x16	290	554	90	140
400	10	580	515	480	28	4	28x16	310	624	115	152
450	10	640	565	530	25,5	4	28x20	330	684	145	185
500	10	715	620	582	31,5	4	28x20	350	744	166	244
600	10	840	725	682	36	5	31x20	390	882	217	360
700	10	910	840	794	32,5	5	31x24	430	978	256	550
800	10	1015	950	901	35	5	34x24	470	1071	323	735
900	10	1125	1050	1001	46,5	5	34x28	510	1120	360	1270
1000	10	1255	1170	1112	50	5	37x28	550	1374	417	1780
1200	10	1485	1390	1328	57	5	41x32	630	1630	530	2315

PN 16

DN	PN	ØD	ØK	Ød	C	f	ØLxn	L	e1	e2	Weight(KG)
200	16	340	295	266	20	3	23x12	230	370	17	60
250	16	405	350	319	22	3	28x12	250	444	48	75
300	16	455	410	370	24,5	4	28x12	270	484	63	105
350	16	520	470	429	26,5	4	28x16	290	554	90	140
400	16	580	525	480	28	4	31x16	310	624	115	152
450	16	640	585	548	30	4	31x20	330	684	145	185
500	16	715	650	609	31,5	4	34x20	350	744	166	244
600	16	840	770	720	36	5	37x20	390	882	217	360
700	16	910	840	794	39,5	5	37x24	430	978	256	550
800	16	1015	950	901	35	5	41x24	470	1071	323	735
900	16	1125	1050	1001	46,5	5	41x28	510	1220	360	1270
1000	16	1255	1170	1112	50	5	44x28	550	1374	417	1780
1200	16	1485	1390	1328	57	5	50x32	630	1630	530	2315

Tilting Check Valve With Hydraulic Damper

Tilting Disc Check Valves With Hydraulic Damper eliminate the closing slams and water hammer for entire closing stroke.
Closing speed is adjustable depends on working conditions.
All components of the valves are designed for high stress occurred during damping effect.

Diameter

DN 150-1000

Pressure

PN 10-25

Material Properties

PART NO	DESCRIPTION
1	Check valve body
2	Damper chassis
3	Hydraulic damper
4	Closing Speed control valves
5	Lever
6	Weight

PN 10

PN 16

Slanted Seat Check Valves With Hydraulic Damper

- On request Slanted Seat Check Valves are equipped with hydraulic end stage dampers in order to prevent the water hammer in pumping stations.
- The end stage damper is active at the last %10 of closing stroke.
- In case of power failure at the pumping station the disc closes very fast until reaching the damper that is why the back flow passing through the check valve during closure is minimum.
- This type is one of the best check valves then the turning back of pump’s impeller is critical. Damping effect can be adjusted by the help of integrated needle valve on damper according to the pumping and working conditions.
- The end stage damper is not linked to the disc and does not resist to. open that is why headless of this type is less than the types with the. dampers linked to the levers.

Diameter

DN 200-1200

Pressure

PN 10-25

Material Properties

PART NO	DESCRIPTION
1	Check valve body
2	Damper chassis
3	End-stage damper
4	Lever
5	Weight

Material Properties

DN	PN	L	e1	e2	h1	h2	WEIGHT (KG)
200	01/10/16	230	185	318	225	163	70
250	01/10/16	250	222	355	280	200	80
300	01/10/16	270	242	374	320	200	105
350	01/10/16	290	277	413	363	258	155
400	01/10/16	310	312	446	405	258	185
450	01/10/16	330	342	505	445	282	230
500	01/10/16	350	372	530	498	321	285
600	01/10/16	390	441	603	585	375	420
700	01/10/16	430	489	724	645	437	650
800	01/10/16	470	536	783	723	525	925
900	01/10/16	510	610	853	813	642	875
1000	01/10/16	550	687	992	903	625	1300
1200	01/10/16	630	815	1208	1063	742	1590

Nozzle Type Check Valves

Fast respond to the flow changes.
Very short closing stroke.
Low weight moving parts.
Non-slam closure.
Low head loss.

Diameter

DN 200-1200

Pressure

PN 10-25

Material Properties

PART NO	DESCRIPTION	MATERIAL
1	Body	Ductile cast iron EN-GJS-400-15
2	Disc	Ductile cast iron EN-GJS-400-15
3	Bearing	Bronze
4	Shaft	Stainless steel X20Cr13
5	Stopper	AISI 304
6	Spring	Stainless steel
7	Bolt	Stainless steel A2
8	Nut	AISI 304
9	Setscrew	Stainless steel A2

Technical Information

DN	PN	L	WEIGHT (KG)
300	16	270	70
350	16	290	113
400	16	310	146
450	16	330	178
500	16	350	218
600	16	390	375
700	16	430	425
800	16	470	600
900	16	510	942
1000	16	550	1260

Axial Silent Check Valves

Short body, small volume and light weight.
Because of low weight of moving parts and non-eccentric design less shock long service life
Suitable for high flow velocities.
Drop tight sealing

Diameter

DN 200-1200

Pressure

PN 10-25

Material Properties

PART NO	DESCRIPTION	MATERIAL
1	Body	Ductile cast iron EN-GJS-400-15
2	Disc	Ductile cast iron EN-GJS-400-15
3	Retaining ring	Steel S235JR
4	Sealing ring	EPDM
5	Hex. socket head cap screw	Stainless steel A2
6	Shaft	Stainless steel X20Cr13
7	Shaft support	Ductile cast iron EN-GJS-400-15
8	Bearing bush	Bronze
9	Hex. socket head cap screw	Stainless steel A2
10	O-ring	EPDM
11	Hex. socket set screw	Stainless steel A2
12	Spring	Stainless steel

Technical Information

DN	PN	L	WEIGHT (KG)
100	16	175	16
125	16	200	21
150	16	225	29
200	16	275	50
250	16	325	84
300	16	375	100
400	16	475	216
450	16	500	295
500	16	550	350
600	16	600	530
700	16	650	645
800	16	700	790
900	16	800	1390
1000	16	900	1680

Flap Valves

Design Properties

DN	PN	ØD	ØK	Ød	C	f	ØLxn	L	WEIGHT (KG)
200	10	340	295	266	20	4	23x8	130	23
250	10	405	350	319	22	4	23x12	138	30
300	10	455	400	370	24,5	4	23x12	142	37
400	10	580	515	480	30	4	28x16	177	68
500	10	715	620	582	32	4	28x20	207	112
600	10	840	725	720	36	5	31x20	217	160

PART NO	DESCRIPTION	MATERIAL
1	Body	Ductile cast iron EN-GJS-400-15
2	Disc	Ductile cast iron EN-GJS-400-15
3	Pin	Stainless steel X20Cr13

Foot Valves

Design Properties

PN 10

PN 16