Lift check valve H41H-16C

Lift check valve H41H-16CDetailed introduction:

Model meaning

H: Indicate the type of valve and return valve.

4: The representative connection method is flange connection.

1: The structural form is a lifting type.

H: The valve seat welding material is stainless steel.

16: The nominal pressure is 1.6MPa.

C: The representative valve body material is carbon steel.

Lift check valve H41H-16Cworking principle

When the medium flows into the valve body as indicated by the arrow, the pressure of the medium acts on the valve disc, generating an upward thrust. When the thrust of the medium is greater than the gravity of the valve disc, the valve opens, allowing the medium to pass through. When the force of the medium pressure behind the valve acting on the valve disc plus the gravity of the valve disc itself is greater than the force of the pressure before the valve acting on the valve disc, the valve closes and prevents the medium from flowing back.

structural characteristics

Good sealing performance: The sealing surface of the valve disc and seat is made of iron-based alloy or Stellite cobalt based hard alloy by welding, which has good wear resistance, high temperature resistance, corrosion resistance, and abrasion resistance, can achieve zero leakage, and has a long service life.

Simple structure: mainly composed of valve body, valve cover, valve disc and other parts, without complex transmission mechanism, light weight, easy installation and maintenance.

Reliable action: The valve disc moves up and down along the centerline of the channel, with sensitive action and the ability to quickly close, effectively preventing medium backflow.

Scope of Application

Medium: Suitable for water, oil, steam, acidic media, etc.

Operating conditions: Widely used in various industries such as petroleum, chemical, pharmaceutical, fertilizer, and power, with a pressure of 1.6MPa and a working temperature ranging from -29 ℃ to 425 ℃ on pipelines.

Installation precautions

The valve should be installed in a horizontal pipeline, and the flow direction of the medium should be consistent with the direction of the arrow on the valve body.

Before installation, a pressure test should be conducted to ensure that it meets the requirements before installation. At the same time, the pipes and valve chambers should be cleaned thoroughly.

After installation, the valve is not allowed to be subjected to significant external forces, and the operating conditions must be consistent with the requirements in the performance specifications.

Design and Manufacturing Standards

Structural length: GB/T 12221.

Welding connection dimensions: ASME B16.25, GB/T 12224.

Inspection and Testing: GB/T 13927, JB/T 9092.

maintenance

Regularly check the sealing performance of the valve. If leakage is found on the sealing surface, the sealing surface should be cleaned or repaired in a timely manner.

Check if there is any leakage at the flange connection part. If there is any leakage, tighten the bolts evenly, repair the flange sealing surface, or replace the gasket.

Regular maintenance should be carried out during long-term storage, and the valve should be placed in a dry warehouse. Outdoor storage is strictly prohibited.

Product Comparison

Compared with the swing check valve, the lift check valve H41H-16C has better sealing performance, but a higher fluid resistance coefficient, and is generally suitable for light and small diameter applications; The rotary check valve has low fluid resistance and is suitable for larger diameter applications.