Valve Sleeve Type Sewage Valve

Model schedule illustration

●Feature code: Body, bonnet bolt-jointed structure (default)      Hs-body, bonnet welded structure      Ps-pressure sealed structure 

                          FL-Reduce expenditure and put emptily       T-The valve is one set of types(valve one)      K-Antisulphur model

●Valve type code:J-Globe valve

●Driving manner code: 4--Spur gear transmission     5-Bevel gear transmission     6-Air driving     6s-Take pneumatically manually

                                      7-Hydrodynamic driving        9-Electric driving      9B--Explosion electric driving (Hand wheel driving omitted)

●Connecting type code:1-Interior whorl 2--Other whorl 4-Flange 6-Welding 8-Bear and insert welding

●Design feature code:1—Straight general formula 4—Angle type

●Sealing formation code:Y—Hard alloy H—Alloy steel D-Nitriding steel F—Intensified polytetrafluoroethylene(PTPE) X-Rubber

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

●R-CF8M、ZG1Cr18Ni12Mo2Ti S-CF3 L-CF3M F-LCB N-LC3

●Body material code: (1) Cast the valve body: C-WCB I-WC6、ZG1Cr5Mo V-WC9、ZG20CrMoV P—CF8、ZG1Cr18Ni9Ti

                                       R-CF8M、ZG1Cr18Ni12Mo2Ti S-CF3 L-CF3M F—LCB N—LC3

                                   (2) Forge the valve body: C-A105 E-LF2 A-F11 V-F22 P—F304 R-F316 S-F304L L-F316L

Products design features

1. This valve is a brand-new throttle, stop and emptying product, uses a cage-like puzzle palace throttle and features a multiple-stage throttle effect, a notable throttle effect, a reliable seal and easy operation and maintenance.

2. The valve uses hard and soft two seals to get it reliably sealed, the carbide alloy sealing face becomes more resisting to the gas-flow erosion and more wearable and the dual-seal can realize nulleak under the high pressure gas medium, leaving along duration of the valve.

3. The sealing face of the seat ring uses a taper seal, benefit to the self-clean of the dirt absorbed onto the face.

4. A balancing hole and a piston type seal are set on the valve's disc, making sure of a stable operation, light and flexible open-close and a small open-close torque.

5. The packing uses a V-type packing structure with self-seal ability, without need to adjust and with both open and close extremely light. An assisting sealing grease injector is set in the packing place to have its sealing performance reliable.

6. The valve can be on-line repaired and replacement of the packing etc. series easily-worn-out parts can be done with a pressure with the pipeline.

7. A bigger sewage removing hole is set on the botom of the valve, it can be opened when necessary to clean up the dirt inside of the valve.

8. There is O-seal ring on the outer circle of the sewage valve's disc,it features self-clean and self-seal function at open-close and throttle and pressure reduction function at sewage removal.

Operation principle

1. Constant close state: the hard seal pair of the floating disc presses on the convex desk of the seat ring to form the first hard seal and, in the meantime, the soft seal inlaid onto the disc is tightly against on the end-face of the seat ring to form the second seal, this dual-seal structure ensures nulleak of the valve and, plus the balancing hole on the disc, the disc is subjected to a smaller effort during open and close of the valve and a smaller moment is made available for the valve to open and close.

2. Throttle and sewage removal state: when the disc seal pair goes away from the seat ring, the balancing hole set on the disc Imakes the valve extremely easily opened and closed. After the valve is opened, the medium and the foreign matters go through the valve sleeve and the seat ring together and both throttle and sewage removal are realized. The sealing faces of both disc and seat ring use the inclination of the sleeve pad to change the medium's flowing direction and feature self-clean function so as to have the seal pair without foreign matters.

3. Closed state: when the valve is closed after the medium in the pipeline is drained out, the medium goes into the seat ring's channel through the inclination of the sleeve pad, the fluid resistance coefficient increases, the flow rate becomes quicker, the linclination changes the medium's flowing direction to produce eddy. The radial force of the medium on the end-face of the seat ring increases to carry out the blowing on the seal of the seat ring. When the disc seal pair is close to the seat ring, the fit interval between the sleeve pad and the seat ring's channel resists the bigger grain medium to flow into the seal pair, plus the further increased flow rate and the lateral blowing by the medium, the foreign matters with the seal pair has been completely cleaned when the valve is closed so as to ensure the sealing performance of the valve after sewage removal, further ensure null leak from the seal after sewage removal, thus greatly enhancing the capacity and extending the duration.

Products performance specification

Technical specification

Notes: The sizes of valve connecting flange and butt-welding terminas can be designed according to customer's requirement.

Major parts material form

	NO.	Part name	Material
	1	Stud	35CrMo
	2	Nut	35
	3	Bottom covering	20
	4	O-Ring	NBR
	5	Body	WCB
	6	Blowdown set	1Cr18Ni9
	7	Filter screen	1Cr18Ni9
	8	Seat	20+Ni45
	9	Socket head cap round-stud screw	35
	10	Pressing plate	20
	11	Seal ring	NBR
	12	Core set	20+ENP
	13	Disc	2Cr13+Ni60
	14	Steel ball	Gcr15
	15	Stem	2Cr13
	16	Bonnet	25
	17	Put the packing cushion	1Cr13
	18	Middle packing	PTFE
	19	Middle packing	NBR
	20	Have thepacking cushion	1Cr13
	21	Spacingring	PTFE
	22	Packing gland	45
	23	Yoke	WCB
	24	Valve stem nut	ZQAL9-4
	25	Handwheel	20
	26	Nut	35
	27	Fat valve of the note	25+zinc-plated(package)

Main size of outside & weight

Model:(K)TP41Y