ANSI Swing Check Valve

Class150-2500LB
2″-30″(50~750mm)
WCB, CF8, CF8M

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ANSI Swing Check Valve Descriptions

ANSI swing check valve is also called one-way valve or non-return valve, which is used to prevent of mediums back flow in the pipeline. The disc of the check valve is action depending on the mediums itself flow pressure, so the check valve is belonging to automatic valve types. Because the swing check valve is only allowed the mediums to flow in one direction, we should note the arrowhead on the check valve when mount it in horizontal position. Swing check valves are widely used in series of industries, especially in oil & gas filed, power plant, etc. Flowspec Luokai can manufacture the ANSI swing check valve in accordance with ASME b16.34 and BS 1868. Welcome to contact us for detailed information and best quotes if you have any questions or inquiries.

1. FEATURES

  • Standard swing type disc
  • Standard renewable seat
  • BC, bolted cover
  • Non-penetrate disc shaft
  • Horizontal or vertical service
  • Flanged or butt-welding ends

3. STANDARDS

  • Design & manufacturing: ASME b16.34 / BS 1868
  • Face to face: ASME B16.10
  • Flanged ends: ASME B16.5/B16.47
  • Inspection & testing: API598
  • Special request: NACE MR-01-75

2. TECHNICAL SPECIFICATIONS

  • Class: 150LB~2500LB
  • Size: 2″ ~ 30″ (DN50~750mm)
  • Materials: steel A216 WCB, stainless steel 304 (A351 CF8), stainless steel 316 (A351 CF8M), CrMo alloy steel A217, low temperature A352.
  • Applicable medium: water, sea water, oil, gas, corrosive liquids
  • Applicable temperature: -29℃~+425℃ (higher temperature is available upon request)
  • Special: NACE MR-01-75

4. APPLICATIONS

  • Petroleum
  • Chemical industry
  • Pharmacy
  • Chemical fertilizer
  • Power plant
  • Textile
  • Printing & dyeing
  • Oil & gas

1 Eyebolt

For 1580Lb-8″,300Lb-8″,600Lb-6″,900Lb/1500Lb/2500Lb-4″&Over.



2 BB

Bolted bonnet. Weldingbonnet and pressureseal bonnet in servicesrequiring frequent cyclingor with high pressure/temperature variations.

3 En d Connections

A choice of Flanged,RTJ flanged or Buttweldingend for piping flexibility.

4 Body-to -Bonnet Joint

A Male and Female joint orTonggue and Groove joint isused 150Lb to 600Lb valves.Ring joint is used in the bodyto bonnet connection in900Lb &higher rated valves.


5 Outside Lever and Weight

All external hinge pin swing checkvalves 12″ and smaller are availablewith an optional outside lever andweight. Internal hinge available withall swing check valves.


6 Seat Rings

Separate heavy duty, fullported rings for easymaintenance. Screwed orwelded connection into body.


HCU Weighted MechanicalAccumulator
This design can be used toeitherdampen or assisist closingof the check valve discdepending on orientation. By usingthe Hydraulic Control Unit to bufferaction the disc, the valve opens at lower flow rates.

Materials of parts

No Part Name ASTM Material
Carbon Steel 1¼Cr-½Mo Carbon Steel
1 Body A216-WCB A217-WC6 A352-LCB
2 Bonnet Cap A216-WCB A217-WC6 A352-LCB
3 Disc¹⁾ A216-WCB+Cr13 A217-WC6+HF A352-LCB+CR13
4 Hinge A216-WCB A217-WC6 A352-LCB
5 Support A216-WCB A217-WC6 A352-LCB
6 Seat Ring A105+HF A182-F11+HF A350-LF2+HF
7 Hinge Pin A276-420 A276-304 A276-420
8 Disc Washer Carbon Steel A276-304 Carbon Steel
9 Disc Nut Carbon Steel A194-7 Carbon Steel
10 Disc Nut Pin Carbon Steel A276-420 Carbon Steel
11 Bonnet Gasket Steel Ring 304SS Ring Steel Ring
12 Bonnet Stud A193-B7 A193-B16 A320-L7
13 Bonnet Stud Nut A194-2H A194-7 A194-4
14 Eyebolt²⁾ Carbon Steel
Note:1). Cast steel disc for NPS 4″and above.
2). NPS6″&larger.
3). Disc and seat ring may either be solid facing material or a base material equal to or
better than the body/bonnet mate rial with facing as shown.
Dimensions data

NPS
DN
2
50
2½65 3
80
4
100
6
150
8
200
10
250
12
300
14
350
16
400
2
50
2½65 3
80
4
100
6
150
8
200
10
250
12
300
in
mm
ANSI Class 1500Lb ANSI Class 2500Lb
L/L1
(RF/BW)
14.50
368
16.50
419
18.50
470
21.50
546
27.75
705
32.75
832
39.00
991
44.50
1130
49.50
1257
54.50
1384
17.75
451
20.00
508
22.75
578
26.50
673
36.00
914
40.25
1022
50.00
1270
56.00
1422
in
mm
L2
(RTJ)
14.62
371
16.62
422
18.62
473
21.62
549
28.00
711
33.12
841
39.38
1000
45.12
1146
50.25
1276
55.38
1407
17.88
454
20.25
514
23.00
584
26.88
683
36.50
927
40.88
1038
50.88
1292
56.88
1445
in
mm
H 9.50
240
10.00
256
13.00
330
14.75
375
18.88
480
23.50
595
26.00
660
29.12
740
30.88
785
32.88
835
10.75
275
13.25
335
13.75
350
15.1
2385
19.50
495
24.62
625
28.00
712
35.6
2905
in
mm
(d) 47 57 69 92 136 177 222 263 288 330 38 47 57 72 111 146 184 218 mm
WT
(kg)
40
29
63
47
70
49
115
84
250
152
470
310
740
470
1100
710
1410
910
1600
1100
50
35
76
55
85
68
165
115
460
225
900
580
1300
860
1800
1150
RF
BW

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