Gas Gate Valve

Model schedule illustration

●Series code: The series code of our company is FY

●Special requirement code: K-Antisulphur model

●Valve type code: Z-Gate valve

●Driving manner code: 4-Spur gear transmission   5-Bevel gear transmission   9-Electric driving

                                     9e-Explosion electric driving (Hand wheel driving omitted)

●Connecting type code: 4-The flange joining   6-To welding joining

●Design feature code: 7-Dark pole parallel single-disc

●Structure manner code: W-Non-diversion hole type (Diversion hole type omitted)

●Sealing formation code: F-Intensified polytetrafluoroethylene(PTFE)

●Pressure grade code: The 10 times of the nominal pressure MPa, pound grade io practical number

●Body material code: C-WCB P-CF8、ZG1Cr18Ni9Ti   R-CF8M、ZG1Cr18Ni12Mo2Ti

Products Design Features

●Cast and weld two structures with the body

●The seat ring uses the floating seat ring structure with o-seal ring sealed and pre-tightening force applied to have inlet and outlet 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.

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

●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.

●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.

●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.

●This valve uses the packing structure with the ability of self-seal, needs no constant adjustment, features very light open and close and a reliable seal. An assisting sealing grease injection structure is set in the packing to have the sealing performance absolutely reliable and get a true nulleak, settling the problem for the packing place of universal valves to be easiest leak outward.

●Automatic removal of the high pressure in the internal cavity when the valve is about to close (see the working principle diagram for the details) so as to ensure safety.

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

●An indication rod or viewing window is set with the valve to show the open-close condition.

Example1:FYZ47F-10C

Note: PN=1.oMpa, spur gear actuated,flange connected inside stem parallel type single-disc gate valve with flow guide hole, the body material is WCB and the sealing face material is reinforced PTFE.

Example2: FY(K)Z67F-16C

Note: PN=1.6Mpa, manually actuated, butt-weld connected, sulphur resisting inside stem parallel type single-disc gate valve with flow guide hole, the body material is WCB and the sealing face material is reinforced PTFE.

Products Design Features

●The body uses a cast structure.

●The seat ring uses the floating seat ring structure with o-seal ring sealed and pre-tightening force applied to have inlet and outlet 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.

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

●The wedge disc of the valve 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.

●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.

●Automatic removal of the high pressure in the internal cavity when the valve is about to close (see the working principle diagram for the details) so as to ensure safety.

●Use a sealed gear-driving open-close indicating mechanism, which is able to clearly show the open-close condition of the valve in a long term.

●The external surface of the directly built-in valve is corrosion resisting treated with epoxy coal bitumen and can be the same duration as the pipeline.

Products Performance Specification

Main Parameter of the Products

Note: Our company can provide products at customres'request.

Technical Specification

	Design reference		GB	API
	Design standard		JB/T 5298 GB/T 19672	API 6D ASME B16.34
	Structural length	Flanged ends	GB/T 12221 GB/T 19672 JB/T 5298	API 6D ASME B16.10
		Welded connection	GB/T 15188.1 GB/T 19672
	Flanged ends		GB/T 9113 JB/T 79	ASME B16.5 MSS SP44
	Butt-welding ends		GB/T 12224	ASME B16.25
	Test & inspection		JB/T 9092	API 6D API 598

Note: valve can be designed according to customer's requirement.

Major Parts Material Form

	No.	Accessory name	Material
			GB
	1	Blow down stopple	25
	2	Body	WCB
	3	Gate disc	16Mn+ENP
	4	Seat	16Mn
	5	O-Ring	FPM
	6	Sealing ring	PTFE
	7	Valve stem nut	ZQAL9-4
	8	Stem	1Cr13
	9	Packing	Graphite+1Cr18Ni9
	10	Bonnet	WCB
	11	Stud	35CrMo
	12	Nut	45
	13	O-Ring	FPM
	14	Bearing	Package
	15	To the ring of holding	45
	16	Six angle screws inside	35
	17	Key	45
	18	Switch indicator	PTFE+1Cr18Ni9
	19	Hand wheel	Q235A
	20	Nut	35

Technical Specification

	Design reference		GB	API
	Design standard		JB/T 5298 GB/T 19672	API 6D ASME B16.34
	Structural length	Flanged ends	GB/T 12221 GB/T 19672 JB/T 5298	API 6D ASME B16.10
		Welded connection	GB/T 15188.1 GB/T 19672
	Flanged ends		GB/T 9113 JB/T 79	ASME B16.5 MSS SP44
	Butt-welding ends		GB/T 12224	ASME B16.25
	Test & inspection		JB/T 9092	API 6D API 598

Note: valve can be designed according to customer's requirement.

Major Parts Material Form

	No.	Accessory name	Material
			GB
	1	Blow down stopple	25
	2	Body	WCB
	3	Gate disc	16Mn+ENP
	4	Seat	16Mn
	5	O-Ring	FPM
	6	Sealing ring	PTFE
	7	Valve stem nut	ZQAL9-4
	8	Stem	1Cr13
	9	Packing	Graphite+1Cr18Ni9
	10	Bonnet	WCB
	11	Stud	35CrMo
	12	Nut	45
	13	O-Ring	FPM
	14	Bearing	Package
	15	To the ring of holding	45
	16	Six angle screws inside	35
	17	Key	45
	18	Switch indicator	PTFE+1Cr18Ni9

Main Size of Outside

Model: (K)Z4(5、9_B)4(6)7F       PN0.4、0.6、1.0、1.6、2.5MPa    PN2.0MPa       API 6D Class150

Main Size of Outside

Model: (K)Z4(5、9_B)4(6)7F       PN0.4MPa    PN5.0MPa       API 6D Class300

Main Size of Outside

Model: (K)Z4(5、9_B)4(6)7F       PN6.4MPa    PN2.0MPa       API 6D Class400