API Casting Gate Valve

API Casting Gate Valve 1.Size:DN25-1000mm 2.Pressure: PN1.0-16.0MPa 3.Material:WCB,WC6,CF8,CF8M,CF3,CF3M

API6D ISO9001 Through Conduit Gate Valve

1.Size:DN25-1000mm2.Pressure: PN1.0-16.0MPa 3.Material:WCB,WC6,CF8,CF8M,CF3,CF3M LCB,LC3,A105,F304,F316 etc.

Wenzhou ONO Valve CO.,Ltd  is a professional manufacturer of valve.Our products include globe valves,check valves,safety valves,ball valves,butterfly valves,diaphragm valves,mud valve ect.And it has complete inspection equipment, such equipments as Fire Safe Test Device of through Loyd’s, Cryogenic Test Device, Torque Test System and Fugitive Emission Test system equipment, which can control the production quality effectively  

Specification:

1.Pipeline valve: API6D,API600

2.Steel flat gate valve for pipeline: JB/t5298

3.Pipe flange and flange fitting: ANSI B16.5a

4.Integral casting steel pipe flange: JB/T79.1~79.2

5.Pressure test of general valve: GB/T13927

6.Valve inspection and test: JB/T9092

7.Drivign manner: Spur gear transmission,Bevel gear transmission,Air driving,Take pneumatically manually,Hydrodynamic driving,Electric driving(Hand wheel driving omitted),Explosion electric driving.

8.Connecting type: Flange,Butt welding.

9.Design feature: Rising-stem parallel single-disc,Rising-stem parallel double-disc.

10.Sealing formation:Hard alloy,Alloy steel,Nitriding steel,Intensified polytetrafiuoroethylene(PEFE)

PS:Product parameters can be customer ordered, the above parameters for reference only.

Nominal Pressure	Strength test		Water-seal test		Gas seal test
	MPa	Lbf/in2	MPa	Lbf/in2	MPa	Lbf/in2
150	3.1	450	2.2	315	0.50.7	60100
300	7.8	1125	5.6	815
600	15.3	2225	11.2	1630
900	23.1	3350	16.8	2440
1500	38.4	5575	28.1	4080
2500	64.6	9367	47.4	6873

 Main parts and materials and performance

Body  ASTM A216 WCB ASTM A351 CF8 Wedge Disc WCB CF8 CF8M Monel Stem  F6a F304 F316 Monel F304 Wedge Disc Sealing Face 13Cr 13Cr STL 304 STL 316 STL Monel 304 304 STL Body Sealing Face 13Cr STL STL 304 STL 316 STL Monel 304 STL STL Body  ASTM A351 CF3 ADTM A351 CF8M ASTM A351 CF8 Wedge Disc Stem F304L F316 F316L Wedge Disc Sealing Face 304L 304L STL 316 316 STL 316L 316L STL Body Sealing Face 304L STL STL 316 STL STL 316L STL STL

Feature:

1.Cast and weld two structures with the body.

2.The seat ring uses the folating seat ring structure with o-seal ring sealed and pre-tightening force applied to have inlet and outle dual-way sealed;and the open-close moment with this structure is 1/2 that of the common valves only,able to lightly open and close valves.

3.The seat ring uses the sealing face inlaid witn PTFE,so has dual seals of PTFE to metal and metal,the PTFE sealing face also acts as removing the dirt on the wedge disc.

4.For the valve with the metal to metal seal,there is grease injector outside of it,grease gets into the sealing face through the injector and the seat ring to have the valve up to null leak.

5.The wedge disc of the valve with flow guide hole is always fitted with the sealing face whether in full open or full close status to have the sealing face protected without being directly eroded by the medium so as to extend the duration.

6.When fully opened,the valve's channel is smooth and linear,with an extremely small flow resisting coefficient and no pressure loss,and the pipeline can be cleaned with hair-ball through it.

7.Automatic removal of tne high prssure is the intermal cavity when the valve is about to close(see the working principle diagram for the details)so as to ensure safety.

8.Fully sealed structure leaves good protective property,suitable for the requirement of 24hour duty. 

API Casting Gate Valve