Short Description

Model No.: tilting-disc-check-valve

China Valves Manufacturer www.sfutube.com offers tilting disc check valve.

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Key Specifications / Features

Type: Tilting Disc Check Valve
Design & Manufactured to API 6D, ASME B16.34 or Equivalent
P.T Ratings to ASME B16.34
Face to Face dimensions to ASME B16.10
Flanged Ends to ASME B16.5
Butt-weld Ends to ASME B16.25
Threaded Ends to ASME B1.20.1
Socket-weld Ends to ASME B16.11
Valves Marking to MSS SP-25
Inspect & Tested to API 598
Size Ranges from 1 1/2” thru 24”
Pressure Ratings from Class 600 to Class 2500, PN110 to PN420
Structures in Bolted or Pressure Sealed Union Cover
Ends Connections in Flanged R.F or RTJ, Threaded NPT, BSPT, Welded S.W, B.W and Grooved
Body Materials available in Cast Carbon Steel, Low Temp. Carbon Steel, Alloy Steel, Stainless Steel, Monel, Alu. Bronze etc.
Trim Materials available in 13%Cr, F11, F22, SS304, SS304L, SS316, SS316L and other specials.

What are Tilting Disc Check Valves

Tilting disc check valve has a mesh disc type closing member, the valve flap rotates around the rocker shaft and is offset from the seat surface. The valve flap closes when it turns down to close with the seat, and the valve flap rises from the seat when it opens. Since the entire valve flap’s center of gravity moves only between the fully open and closed positions, the stroke is very short, so the swashplate stop valve closes quickly. Figure 1 shows one kind of tilting disc check valve.
20211015094309 50420 - Tilting Disc Check Valve
Figure 1 Tilting disc check valve
1-Left valve body; 2-Pin; 3-Flap; 4-Right valve body
Tilting disc check valve is a butterfly-shaped swashplate installed on the valve shaft, the valve seat is a special floating, resilient metal hard seal seat, so as to ensure that the seat can automatically adjust the alignment with the valve.
Its seat sealing surface is part of the oblique cone, the seal line formed between the seat and the valve valve is an approximate elliptical curve, the plane where the curve is located and the valve flow path centerline angle of 60 °; approximate elliptical seal line of the long axis center and cone axis to form an angle eccentric, that is, the seat sealing surface where the axis of the cone and the valve body flow path centerline between the formation of the second eccentric angle of 15 ° ~ 20 °;. The axis of the valve flap rotation axis relative to the axis of the cone to form an eccentric amount, and relative to the plane where the sealing line is also in an eccentric position, forming an eccentric amount.
When the pressure of the medium reaches its working pressure, the valve flap opens, and when the pressure of the medium decreases, the butterfly swashplate valve flap closes automatically. Because the valve flap and metal seat have the characteristics of a triple eccentric butterfly valve, this structure allows the valve flap to perform a pendulum movement. There is no friction or sliding contact between the disc beveled seat and the funnel shaped valve during union and separation. It quickly seals without external force and with virtually no impact or collision with the valve seat during closure. At the same time, it has the characteristics of high flow rate and low flow resistance.
Tilting disc check valve features are as follows.

  • 1. Check valve impact phenomenon, is caused by the valve flap does not reach the closed position before the fluid backflow. The tilting disc check valve can close quickly because the valve flap runs a short distance, so it can quickly reach the seat position, thus minimizing the impact phenomenon.
  • 2. The tilting disc check valve is suitable for preventing the backflow of fluid in horizontal or vertical pipelines. In vertical pipelines, or any inclined angle between horizontal and vertical pipelines, these check valves are only suitable for pipelines with the media flowing upward.
  • 3. The tilting disc check valve operates automatically. It opens under the pressure of fluid flow rate and closes under the action of gravity. The seat seal load and tightness is related to the back pressure. If the flow pressure is not sufficient to support the valve in an open, stable position, the valve flap and other moving parts will continue to vibrate.

To avoid premature wear, noise, or vibrating operation of moving parts, select the check valve’s passage diameter based on the fluid condition. The minimum fluid velocity required to support a flap check valve in an open, stable open position is calculated using the following equation.
The structural principle of the flap check valve
1 20042R12Z9605 - Tilting Disc Check Valve
in the formula: v – flow velocity, ft / s.
The structural principle of the tilting disc check valve
1 20042R12926351 - Tilting Disc Check Valve
–fluid specific volume, ft3/lb.
By determining the check valve passage diameter in this way, it may appear that the determined check valve passage diameter is smaller than the pipe passage diameter, so that during installation, it may be necessary to install a reducer. The resulting pressure drop cannot be greater than those in the partially open state of the valve with a larger diameter, which will greatly extend the service life of the valve and can also bring the additional benefit of a smaller valve diameter and relatively lower costs.
Tilting disc check valve has the disadvantage of high cost, and, compared with the swing check valve, more difficult to repair. Therefore, the tilting disc check valve is usually limited to the rotary check valve can not meet the requirements of the occasion.

We focus on valves in standard and special materials as customer request.
Our main materials show as the follows:
Any request for other materials, please contact our machinery sales or engineering team on email.

Special Material Titanium or Titanium alloy series Titanium (Gr.2,Gr.3,Gr.5,Gr.7,Gr.12)
Nickel alloy series Ni6,Ni200,Ni201
Monel 400,Monel k500
Inconel 600/625/690/750
Incoloy 800/825/800H/800HT
Hastelloy B3/C/C4/C22/C276/G30
Zirconium alloy series Zirconium 702/703/705
Bronze alloy series Nickel aluminum bronze C95800
(Super) Duplex Steel ASTM F51/F53/F55
Other corrosion resistance Alloy 20,AISI 321,310,904L
Normal Material Carbon Steel WCB,WCC,LCB,LCC,A105N,LF2
Alloy Material (Low Temperature) LC1,LC2,LC3,LF3
Alloy Material (High Temperature) WC1,WC6,WC9,C5,C12A
Stainless Steel CA15,CF8,CF8M,CF3,CF3M

Dimensions of Tilting Disc Check Valve ANSI CLASS 125, CI DI (IN)

 data ff flg tilt disk check valve - Tilting Disc Check Valvedata ff flg tilt disk check valve 1 - Tilting Disc Check Valve

Valve Size

(in)

Flat Face

Face to Face Dimension (in)

Approx. Weight (lb)
125 IR

A

250 IR

A

150 DI

A

125 IR

 

250 IR

 

150 DI

 

1/2
3/4
1
1 1/2
2 9 1/2 9 1/2 9 1/2 50 60 55
2 1/2
3 9 1/2 9 1/2 9 1/2 64 75 70
4 11 1/2 11 1/2 11 1/2 80 100 87
6 15 15 15 160 210 170
8 19 1/2 19 1/2 19 1/2 300 330 315
10 24 1/2 24 1/2 24 1/2 335 560 475
12 24 24 24 625 790 675
14 30 30 30 890 1110 955
16 30 30 30 1160 1450 1260
18 33 33 33 1410 1770 1510
20 32 32 32 1720 1970 1860
24 38 38 38 2700 3420 2925

Dimensions of Tilting Disc Check Valve ANSI CLASS 150, CI DI (IN)

data ff flg tilt disk check valve - Tilting Disc Check Valvedata ff flg tilt disk check valve 1 - Tilting Disc Check Valve

Valve Size

(in)

Flat Face

Face to Face Dimension (in)

Approx. Weight (lb)
125 IR

A

250 IR

A

150 DI

A

125 IR

 

250 IR

 

150 DI

 

1/2
3/4
1
1 1/2
2 9 1/2 9 1/2 9 1/2 50 60 55
2 1/2
3 9 1/2 9 1/2 9 1/2 64 75 70
4 11 1/2 11 1/2 11 1/2 80 100 87
6 15 15 15 160 210 170
8 19 1/2 19 1/2 19 1/2 300 330 315
10 24 1/2 24 1/2 24 1/2 335 560 475
12 24 24 24 625 790 675
14 30 30 30 890 1110 955
16 30 30 30 1160 1450 1260
18 33 33 33 1410 1770 1510
20 32 32 32 1720 1970 1860
24 38 38 38 2700 3420 2925

Dimensions of Tilting Disc Check Valve ANSI CLASS 250, CI DI (IN)

data ff flg tilt disk check valve - Tilting Disc Check Valvedata ff flg tilt disk check valve 1 - Tilting Disc Check Valve

Valve Size

(in)

Flat Face

Face to Face Dimension (in)

Approx. Weight (lb)
125 IR

A

250 IR

A

150 DI

A

125 IR

 

250 IR

 

150 DI

 

1/2
3/4
1
1 1/2
2 9 1/2 9 1/2 9 1/2 50 60 55
2 1/2
3 9 1/2 9 1/2 9 1/2 64 75 70
4 11 1/2 11 1/2 11 1/2 80 100 87
6 15 15 15 160 210 170
8 19 1/2 19 1/2 19 1/2 300 330 315
10 24 1/2 24 1/2 24 1/2 335 560 475
12 24 24 24 625 790 675
14 30 30 30 890 1110 955
16 30 30 30 1160 1450 1260
18 33 33 33 1410 1770 1510
20 32 32 32 1720 1970 1860
24 38 38 38 2700 3420 2925

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