Spring Loaded Liffting Disc Ball Check Valve PN 16 , Integral Flange Ends

 

Spring Loaded Liffting Disc Ball Check Valve PN 16 , Integral Flange Ends

 

 

Spring Loaded Liffting Disc Check Valves PN 16

Integral Flange Ends Design DIN PN 16,Face To

Face Length DIN 3202 F1.

Main Parts Material Description:

Body:C.Iron/Disc And Spring:St.Steel X2013%Cr

Sealing:Metal-Metal

 

DIN Lift Check Valve

Applicable Standards:
-  Design EN 13709

-  Face to face EN 558-1

-  End Flanges EN 1092-1

-  Butt Welding ends EN 12627

-  Inspection and test EN 12266-1

 

Size Range:
- DN15~DN400

Pressure Rating:
- PN16, PN25, PN40

Temperature Range:
- -196°C~650°C

 

 

Product Feature:

1, the disc lift check valve disc, seat around tunnel axis rotation, due to the channel into a streamline in the valve, flow resistance is smaller than l butterfly check valve, suitable for low velocity and flow not often change the large diameter of occasions, but should not be used for oscillating flow, its sealing performance than lift.Butterfly check valve points single type, double disc type and for the most part three, the three forms mainly by the valve diameter, the purpose is to prevent the backflow medium flow or stop, decrease hydraulic shock.

 

2, lift check valve: disc revolve around pin in the seat of the check valve.Disc check valve has simple structure, can only be installed in horizontal pipe runs, sealing is good.

3, lift check valve: disc sliding along the center line of the body of the valve.Pipeline check valve is a new kind of valve, its small size, light in weight and good processing technology, is one of the check valve development direction.But the fluid drag coefficient is slightly superior to swing check valves.

 

Applications:Pumping stations. Water treatment and supply. Networks for clean water distribution, irrigation (filtered water). Fire protection networks.

 

Technical data

• Design: EN14341 (EN12516).
•  
• Range: Flanged ends from DN 50 to DN 500 (others inquire).
•  
• Connections: Flanged PN6 to PN25 acc.to EN1092-1 / ISO7005-1 / BS 4504 sect 3.2 ANSI 125#/150# acc to ASME B16.1 / B16.5
•  
• Operating temperatures -20ºC +120ºC (for other temperatures inquire).
•  
• Testing: EN12266 (ISO5208).
•  
• Minimum backpressure for tightness: 0,2 bars.
•  
• Face to Face not according to standards.

Technical performances

• Versatile instalation.
•  
• Springs loaded disc for better sealing.
•  
• Reduces Water hammer.
•  
• Silent.
•  
• Excellent relation price quality.
•  
• Available with strainer to use as footvalve.
•  
• Available with threaded bosses for assembly manometers, controlled evacuation or by-pass.

Test

• Seat: 1,1 x nominal pressure.
•  
• Body: 1,5 x nominal pressure.

Materials

• Alloy steel.
•  
• Also available in stainless steel and superduplex. Sizes to be inquired.

 

 

Silent Lift Check Valve

Brief introduction:

The silent resilient check valve is applied to the vertical pipelines in which medium flow runs upwards

 and the 

back-wards flowing are effectively stopped.  It could be widely used in water-supply system and drain system and it works silence.

 

Features: 

⊙Professional design

The inner cavity of valve is designed as streamline shape, which can effectively stop the turbulence.

 The 

spherical surface is introduced to form the front of disc and cone contact for the seating couple; these 

structures will extremely the shock force of medium and decrease the resistance coefficient of flow. 

 Thin shell 

structures is employed when design the diversion component to ensure the laminar flow and greatly 

drop the 

weight.  The reasonable open height and cavity space enable the obtaining of maximum area of flow 

section.  It 

can avoid occurring of the air chamber; the valve parameter Cv is improved.

⊙Excellent proof corrosion characteristics

Internal and external epoxy resin coating.                      

⊙Reliable hygiene principles

Epoxy resin and rubber comply with hygiene standard, the trim, such as disc, spring, etc., are made 

of stainless

 steel.

      

Mail part & material 

Body, Line: GGG50 with internal and external epoxy resin coating 

Disc: GGG50 or casting steel

Guiding stem, Spring: 1Cr17Ni12Mo2Ti, Stainless steel  

Guiding bushing: Bronze CuAI10Fe3

Flange washer, O-ring: NBR, EPDM or FPM 

 

Technical Specification

-Nominal diameter:50～350mm        

-Nominal pressure:1.0/1.6Mpa
-Strength testing pressure:1.5/2.4Mpa

-Sealing testing pressure:1.1/1.76Mpa

Executive standard

Design standard	AWWA A508
Face to face	Enterprise standard
Flange end	DIN 2501
Test & inspection	JG/T 9092-1999
Working temperature	NBR<80℃;  EPDM<120℃;  FPM<160℃

 

                   

DN	L	Flange dimensions comply with GB/T17421.6-1998
		O		C		g		f	b		n-d
		1.0MPa	1.6MPa	1.0MPa	1.6MPa	1.0MPa	1.6MPa		1.0MPa	1.6MPa	1.0MPa	1.6MPa
50	120	165	165	125	125	99	99	3	19	19	4-19	4-19
65	150	185	185	145	145	118	118	3	19	19	4-19	4-19
80	180	200	200	160	160	132	132	3	19	19	8-19	8-19
100	229	220	220	180	180	156	156	3	19	19	8-19	8-19
125	254	250	250	210	210	184	184	3	19	19	8-19	8-19
150	267	285	285	240	240	211	211	3	19	19	8-23	8-23
200	292	340	340	295	295	266	266	3	20	20	8-23	12-23
250	330	395	405	350	355	319	319	3	22	22	12-23	12-28
300	356	445	460	400	410	370	370	4	24.5	24.5	12-23	12-28
350	381	505	520	460	470	429	429	4	24.5	24.5	16-23	16-28