VLV SWCHK CS 150 RFBB 2, TR13
PK swing check valves are industrial non-return valves designed to allow fluid to flow in one direction while automatically preventing reverse flow in a pipeline. They operate using a hinged disc that swings open when fluid flows forward and closes when the flow stops or reverses, creating a tight seal against backflow. Known for their simple and durable design, PK swing check valves provide low resistance to flow and reliable performance in demanding systems such as oil and gas pipelines, petrochemical facilities, power plants, and other industrial process applications. Their robust construction helps protect pumps, compressors, and other equipment from potential damage caused by reverse flow.
SERVICE RECOMMENDATION:
The swing check valve shall be opreated in a manner to avoid the following troubles;
Rapid fluctuating movement o f valve closing member. The excessively high surge pressure by valve closing is prevented by closing the valve fast enough not to develop a significant reverse flow on a sudden shutoff which is a source of the surge pressure. Thus, the closing speed of valve should match closely with the speed of forward flow retard.
The rapid fluctuating movement of valve closing member must be avoided to prevent the moving valve parts from excessive wear which may result in early failure of valve. Such movements can be precluded by sizing the valve to a flow rate which forces the closure member not to move.
The swing check valve can also be mounted to the vertical position, provied the disc should not reach the valve position. However, the closing moment of disc by weight is very low in fully-opened position, so the valve tends to close late. In order to overcome such slow response to flow retardation, the disc may be supplied with a lever-mounted weight or with spring loaded.
END CONNECTION:
R.F FLANGED ENDS TO ASME B16.5
B.W ENDS TO ASME B16.25
R.T.J FLANGED ENDS TO ASME B16.5
SIZE 26" AND LARGER, FLANGED ENDS
ACCORDING TO ASME B16.47 SER.A OR SER.B
In stock
Only 6 left
SKU
312-PKWCBCRF118
PK swing check valves are industrial non-return valves designed to allow fluid to flow in one direction while automatically preventing reverse flow in a pipeline. They operate using a hinged disc that swings open when fluid flows forward and closes when the flow stops or reverses, creating a tight seal against backflow. Known for their simple and durable design, PK swing check valves provide low resistance to flow and reliable performance in demanding systems such as oil and gas pipelines, petrochemical facilities, power plants, and other industrial process applications. Their robust construction helps protect pumps, compressors, and other equipment from potential damage caused by reverse flow.
BODY:
The body has a spherical form with large radius, which permits the stress, turbulence and resistance to flow to be kept minimum
PRODUCTION MATERIALS:
Carbon Steel: ASTM A216-WCB or Equivalent
Alloy Steel: ASTM A217-WC6, WC9, C5, C12, C12A or Equivalent
Stainless Steel: ASTM A351-CF8. CF8M, CF3, CF3M, CN7M, or Equivalent
Duplex Stainless Steel: ASTM A995-1A, 2A, 4A, 5A or Equivalent
Special Alloy Steel: Inconel 625, Incoloy 825, Hastelloy C, Monel, AL-BRONZE
ASME SA designation material (eg, ASME SA217-WC6)
END CONNECTIONS:
In our standard production of valve, the flange ends (RF) and the face to face dimensinos conform to ANSI B16.5 and ASME B16.10, respectively, and they have a raised face serrated finish type or other finish type as requested.
For butt-welded ends (B.W), of which the end to end dimension conforms to ASME B16.10, customer must specify the schedule type required, pipe class, or bore diameter. Ring joint flanged ends (R.T.J) conform to ASME B16.5 and the end to end dimension follows ASME B16.10. The other special end connections may be supplied as required by customer.
HINGE ARRANGEMENT:
Body penetration is sealed with blind flange and spiral-wound gasket
Arm pin is located near the disc center of gravity, minimzing sealing surface radius rotation and thus velocity.
ARM ARRANGEMENT:
Hydrofoil profile maintains the disc stability while being lifted by a hydrodynamic force at a flow including pulsating.
Heavy-balanced weight insures that disc goes to seat immediately upon cessation of flow and minimizes water hammer.
DESIGN DATA FEATURES:
Comply with the following standards; ASME B16.25, B16.34, MSS-SP-25, API 600 Style A.
The butt-welded end details of PK standard product shall be prepared in accordance with ASME B16.25
BODY - COVER JOINT:
Body-cover joint of swing check valve is machined as follows:
Class 150 ..................................Male and female.
Class 300 and 600 ................... Male and female.
Class 900 higher class ............. Ring type joint.
We can supply any kinds of gasket as required by customer.
DIMENSION AND WEIGHT:
| SKU | 312-PKWCBCRF118 |
|---|---|
| Manufacturer | PK VALVE |
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