ANSI swing check valve B16.34 manufacturer suppliers-Flowspec Luokai

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
No	Part Name	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