Rising Stem Gate Valve Application

• Simple body, short structure length, good manufacturing technology, wide range of use.
  

• The mounting direction is not controlled by the flow direction of the fluid medium, nor by the spatial position.

• Rising Stem Gate Valve has Unique structure, flexible operation, labor saving, convenient.

• The Rising Stem Gate Valve body is made of precision casting, the precise geometry makes the north of the valve body not need any finishing, so as to ensure the tightness of the valve.

• Rising Stem Gate Valve Application: Pipelines to convery oil and storage facilities, Water and wastewater technology, The wellhead device of the oil and gas expoitation, Water engineering.

Rising Stem Gate Valve Introduction

Rising stem resilient seat gate valve made of speclal rubber elastlcly  full wrap-plece valve structure, and the general absence of gate  leakage or rust compared to other phenomena. Overcome their  common seal bad, elastic fatigue, wear rubber aging and Sealing ruts and other defects、 Produced by ths elastic saeling full  compensation of small quantities of deformation to achieve a  good sealing effect. It can be widely used in water supply,  petrochemical, metallurgy, shipbuilding, food, pharmaceuticals  and energy systems and other fluid line is used as a regulator  and shut-off devices.

Rising stem resilient seat gate valve Features

1. The overall package of plastic: the spool and the latest high-performance rubber vulcanization technology overall   coating. laminating are tight. accurate geometry, rellable sealing and long service life.

2. Light weight: body ductile iron material, gate valve to reducs weight than tha average 25%, easy installation and   maintenance; gate valve maximum opening helght is generally low 60mm ~ 280mm, can be Installed where space   is llmited.

3. Flat style seat: The bottom of the pipe the same flat style seat design, does not produce debris accumulation, flow   channel unimpeded and reliable sealing.

4. Corrosion resistance: the valve cavity using non-toxic epoxy powder coating, inner parts mining copper alloy and   stainless steel to prevent corrosion and rust.

5. The three 'O' seal: the use of the stem seal O-ring seals, friction is small, lightweight and watertight gwitch.

Rising stem gate valves body matieral

Rising stem gate valves have the threads external to the valve body. The gate valve stem is moving up when the valve is opening.  Rising stem valves are usually made from cast or forged steel while non rising stem valves are more typically brass, bronze or cast iron. 

Rising stem gate valves body under high pressure

Rising stem gate valves can be used in high pressure rating up to Class 2500 or up to 420 bar, while non rising stem gate valves are normally used for middle pressure rating.

Attention of Rising stem gate valves

In this way you can visually keep track of how far the valve is open. With a rising stem gate valve it is easy to tell if the valve is open or closed by looking at the amount of stem that is exposed. If the handle is flush with the pipe (no exposed stem), the valve is closed. If a lot of stem is exposed, the valve is open.

API standards

API is the abbreviation of American Petroleum Institute. API was founded in 1919 and was the first national-level business association in the United States. An important task of API is to be responsible for the standardization of equipment used in the oil and gas industry to ensure the safe and reliable interchangeability of equipment used in the industry. API enjoys a high reputation in the United States and abroad. According to its technical standards for petrochemical and oil extraction machinery, it has been adopted by many countries. It is a petroleum machinery certification body recognized by the US Department of Commerce and the US Trade Commission. API certification mark also enjoys a high reputation in the international arena. Petroleum machinery wearing the API logo is not only considered to be of reliable quality but also of advanced technology.

API standards are divided into three categories:

1. Petroleum equipment design and manufacturing specifications;

2. Recommended practices for the use and maintenance of petroleum equipment;

3. Recommended practices for drilling and strip production operations.

In general, API standards are reviewed, revised, reconfirmed or withdrawn at least once every 5 years. Sometimes the review cycle can be extended once, but it can be extended for more than 2 years. Therefore, unless it has been authorized and then extended, the API standard will no longer be valid after 5 years from the date of publication.

API does not require compulsory laboratory testing for products applying for certification, but API proposes 55 detailed specifications for various equipment involving oil and natural gas collection and processing industries. For example, the 6D specification involves pipeline valves, including ball valves, gates, and check valves. These specifications specify the minimum requirements that products must meet. Although there is no mandatory testing, API observers will check the product plan submitted by the manufacturer to ensure that the manufacturer is implementing the product planning system during the production process.