STV Delivery Wafer Knife Gate Valve,304,150LB,To Canada,60PCS
KNIFE GATE VALVE CLASS 150# , CF8 BODY ,
304 / PTFE TRIM , WAFER TYPE
SIZE 4″ ” STV ” KG151 60PCS
wafer knife gate valve dimensions
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KNIFE GATE VALVE CLASS 150# , CF8 BODY ,
304 / PTFE TRIM , WAFER TYPE
SIZE 4″ ” STV ” KG151 60PCS
wafer knife gate valve dimensions
One. Opening and closing parts are different
The knife gate valve is a gate that opens and closes vertically along the body passage. The gate has the function of cutting off, and can be used in sewage or impurity pipelines.
The butterfly valve is a rotary valve. The butterfly valve rotates in the channel to open and close. It has flow loss and can only be used for pure medium.
Similarity: The valve body is thin and is used in low pressure pipelines.
VALVE:CHECK;STEEL,
300DIAX180MM L,
WAFER TYPE
QNSI SER#150 DBL
DISC 316+EPDM SEAT
APPLICATION:
POTABLE WATER
MFR: STV
CORPORATION OR
EQUIVALENT” NOTE:
SEAT MATERIAL: TO
BE
ADVISEDHS:848180409
0
The WAFER check valve refers to a valve that automatically opens and closes the valve flap by means of the flow of the medium itself, and is used to prevent the back flow of the medium, which is also called a check valve, a check valve, a reverse flow valve, and a back pressure valve. The check valve is an automatic valve whose main function is to prevent backflow of the medium, prevent the pump and drive motor from reversing, and discharge the container medium. The check valve can also be used to supply a line in which the pressure may rise to an auxiliary system that exceeds the system pressure. The check valve can be mainly divided into a swing type check valve (rotation according to the center of gravity) and a lift check valve (moving along the axis)
working principle
The function of this type of valve is to allow only the medium to flow in one direction and to prevent the flow in the opposite direction. Usually, the valve is automatically operated, and the valve flap is opened by the fluid pressure flowing in one direction; when the fluid flows in the opposite direction, the fluid pressure and the self-reclosing valve flap of the valve disc act on the valve seat to cut off the flow.
Among them, the stainless steel wafer type check valve belongs to this type of valve, and includes a swing type check valve and a lift check valve. The swing check valve has a hinge mechanism and a door-like flap that rests freely against the inclined seat surface. In order to ensure that the valve flap can reach the proper position of the valve seat surface each time, the valve flap is designed in the hinge mechanism, so that the valve flap has enough swinging space and the valve flap is truly and comprehensively in contact with the valve seat. The flaps can all be made of metal, or they can be inlaid with leather, rubber, or synthetic coverings depending on the performance requirements. With the swing-open check valve fully open, the fluid pressure is almost unimpeded, so the pressure drop across the valve is relatively small. The valve flap of the lift check valve is located on the valve seat sealing surface of the valve body. In addition to the flap being free to lift and lower, the valve is like a shut-off valve. The fluid pressure causes the flap to lift from the seat sealing surface. The backflow of the medium causes the flap to fall back onto the seat and shut off the flow. Depending on the conditions of use, the flap can be of all metal construction or it can be in the form of a rubber or rubber ring on the valve disc holder. Like the shut-off valve, the passage of fluid through the lift check valve is also narrow, so the pressure drop through the lift check valve is larger than that of the swing check valve, and the flow rate of the swing check valve is limited. Very few].
Technical Parameters
Nominal pressure or pressure level: PN1.0-16.0MPa, ANSI CLASS 150-900, JIS10-20K
Nominal diameter or caliber: DN15~900, NPS 1/4~36
Connection method: flange, butt welding, thread, socket welding, etc.
Applicable temperature: -196 ° C ~ 540 ° C
Body material: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8 (304), CF3 (304L), CF8M (316), CF3M (316L), Ti.
Different materials can be used for water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media.
The reason why the stainless steel forged steel valve adopts the forced sealing is that when the stainless steel forged steel valve is closed, the external force is forced to press the ram to the valve seat to ensure the sealing of the sealing surface. Stainless steel forged steel valves should generally be installed horizontally in the pipeline. When the gate valve is closed, the sealing surface can be sealed only by the medium pressure, that is, the sealing surface of the ram is pressed against the valve seat on the other side by the medium pressure to ensure the sealing of the sealing surface, which is self-sealing.
STV Valve Has A lot of order shipped yesterday ANSI gate valves with 316,Ball Valve,Globe Valve,and Check Valve to South Africa。all the orders were delivered on time .https://youtu.be/mzGjHbmBREM
50 x 4” ANSI 150 WCB/F6 HFS Gate valves & 20 x 3” 150 Y Strainer CF8M ,20×2″316/316 full stellite socket weld globe valves
to ship the warehose of the port
STV Valve Technology Group Co., Ltd delivery the 900LB Wafer Lift Check valve,the material is F51 and A105,many thanks for you customer’s trust,we will offer more high quality products.
Today we finish this below order,many thanks for our customer’s support,we are looking forward to next cooperation.
3 Pcs Dual Plate Wafer Check Valve ready for delivery
On 11th April 2019,its the four working day of our company after the China Ming Festival,3 pcs of Dual Plate Wafer Check Valve, ASTM B148 C95400, 18 IN CL300, API 594 finsheed the painting and pakcing,Are ready for despatch.
Valve description:
Name: Dual Plate check valve, wafer type.
Design: API 594.
Body: ASTM B148 C95400.
Nominal size: 18 Inch.
Nominal class: Class 300 LB.
Connection ends: wafer type for connection between 2 flange, as per ASME B16.47B.
Face to face: as per ASME B16.10.
Test and inspection: API 598.
Technical parameters and characteristics
Product | Dual-Plate check valve |
Nominal diameter | NPS 2” ~ 48” |
Design temp. | -196℃ ~ 593℃ |
Design pressure | class 150 ~ 1500 |
Material | A216 WCB, WCC, A217 WC6, WC9, C5, C12A, A352 LCB, LCC, A351 CF8, CF8M, CF3M, CF8C, CN3MN, CK3MCUN, CN7M, A890 4A(CD3MN), 5A(CE3MN), 6A(CD3MWCuN), ASTM B 148 C95800, C95500,C95400 |
Design standard | API 594, API 6D |
Face to Face | ASME B16.10 |
Connection end | wafer, LUG, RF |
Test standard | API 598, ISO 5208 |
Operation | NO |
Application | electric power, petroleum refining, petrochemical engineering, offshore oil, chemical engineering |
Function 1 | With springs, material INCONEL X 750 |
Function 2 | Option: Metal seat: stainless steel、Stellite |
Function 3 | Option: Soft seat: EPDM, NBR,VITON |
Function 4 | outside of shaft as old-common design inside of shaft as new design, without external leakage |
Function 5 | Light weight & compact design |