Pressure-Seal Swing Check Valve

Type: Pressure-Seal Swing 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 is a pressure-seal swing check valve

A pressure-seal swing check valve is intended for high pressure, high temperature applications in all types of fluid except where severe coking is a factor. The design and material selections provide excellent service in steam-generation stations, industrial chemical plants and thermal power plants.
They are recommended for use with steam, air, gas, water, and high flow rate steam lines.

Applicable Standards of pressure-seal swing check valve

• Design: ASME B16.34, API6D 
• Fire safe: API 607 
• Anti static: API 608, API6D 
• Face to face: ASME B16.10, API6D
• Welding ends: ASME B16.25
• Inspection and test: API 598, API 6D

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 Pressure-Seal Swing Check Valve

Pressure-seal swing check valve standard material specifications

NO.	Part Name	CS to ASTM	AS to ASTM	SS to ASTM
		Type A105	Type F22	Type F304(L)	Type F316(L)
1	Seat Ring	A276 410	A276 304	A276 304(L)	A276 316(L)
2	Pin	A276 420		A182 F304	A182 F316
3	Pressure Ring	A276 304L			A276 316(L)
4	Pressure Seat	A105	A182 F304	A182 F304(L)	A182 F316(L)
5	Body	A105	A182 F22	A182 F304(L)	A182 F316(L)
6	Bonnet	A105	A182 F22	A182 F304 L	A182 F316(L)
7	Bolt	A193 B7	A193 B16	A193 B8	A193 B8M
8	Quarter Ring	A276 420	A182 F304		A182 F316
9	Pont levis	A105	A182 F22	A182 F304 L	A182 F316(L)
10	Hinge	A105	A182 F22	A182 F304 L	A182 F316(L)
11	Disc	A276 420	F304	A182 F304(L)	F316(L)
12	Nut	A194 2H	A194 4	A194 8	A194 8M
Suitable Medium		W.O.G. etc	W.O.G. etc	HNO3,CH3OOH etc
Suitable Temperature		-29℃~425℃	-29℃~550℃	-29℃~180℃

Note: Other materials are available upon request.

Pressure-seal piston check valve dimensions (mm) and weights (kg)

NPS		1/2	3/4	1	1-1/4	1-1/2	2
L	900~1500Lb	140	140	140	178	178	216
	2500Lb	186	186	186	232	232	279
H		117	117	117	152	152	195
Weights	900~1500Lb	8.2	7.8	7.7	19.8	19.2	21.3
	2500Lb	10.0	9.6	9.4	21.5	21.1	22.8