Pneumatic Ball Valve

JONLOO Floating ball is supported by two valve seats. Under the medium pressure effect, a certain displacement can be generated by the ball itself so as to be pressed onto the seat seal ring at the outlet, thus guarantee its tightness at the outlet.

Details
Size: DN15 to DN200
Pressure Rating: PN16-PN64
Body Material: Carbon steel, stainless steel, alloy, etc.
End connection: Flange or Butt welded ends
Operation: Lever, Gear, Pneumatic, hydraulic or Electric actuator optional.

Standards
Design and Manufacture: DIN 3357
Face to Face: EN 558-1/DIN 3202
Flange Ends: EN 1092-1
Test and Inspection: EN 12266-1/API 598

Features
Full port ( FP) or reduced bore (RB);
Two piece split body or three piece bolted body;
With floating ball design;
Blow-out proof stem, anti-static and fire safe design
Optional locking device or stem extension;
Optional direct mounting to ISO 5211.

1. Special Seat Design
The floating ball valve adopts the design of flexible seal ring structure. When the medium pressure is lower, the contact area of seal ring and ball is smaller. so higher sealing ratio is formed at the place where the seal ring and ball contact to ensure reliable sealing. When the medium pressure is higher, the contact area of seal and ball becomes bigger along with the elastic deformation of seal ring, so the seal ring can endure higher medium thrust without being damaged.
2. Fireproof Structure Design
In case of fire during the use of valve, the seat ring made of PTFE or other non-metal materials will be decomposed or damaged under high temperature and cause higher leakage. The fireproof seal ring is set between ball and seat so that after the valve seat is burnt, the medium will push the ball rapidly towards the downstream metal seal ring to form the auxiliary metal to metal sealing structure, which can effectively control valve leakage. In addition, the middle flange sealing gasket is made of metal wound gasket, which can ensure sealing even under high temperature. The fireproof structure design of floating ball valve conforms to requirements in API 607,spi 6FA,BS 6755 and other standards.

3. Reliable Sealing Of Valve Stem
The stem is provided with the shoulder at its bottom so that it will not be blown out by the medium even under the extreme conditions such as abnormal pressure rise inside the valve cavity, failure of gland plate and etc. In addition, to avoid leakage after the stem packing is burnt in case of fire, the thrust bearing is set at the place where the stem shoulder and body contact to form a reverse sealing seat. The sealing force of the reverse seal will increase according to the increase of medium pressure, so as to ensure reliable stem sealing under various pressure, prevent leakage and avoid accident spreading.
The stem adopts V type packing sealing structure. The V type packing can effectively change the pressing force and medium force of the gland into the sealing force of the stem.
According to user requirements, the disc spring loaded packing pressing mechanism can be adopted to make the sealing of stem packing more reliable.
4. Anti-static Structure
The ball valve is provided with anti-static structure and adopts the static electricity discharge device to directly form a static channel between the ball and body or form a static channel between the ball and body through the stem, so as to discharge the static electricity produced due to friction during the opening and closing of ball and seat through the pipeline, avoiding fire or explosion that may be caused by static spark and ensuring system safety.

5. Lock And Mis-operation Prevention
The manual ball valve can be locked by a lock when it is at the full open or full close position. The 90°open and close positioning piece with lock hole is designed to avoid valve mis-operation caused due to handle operation by non-opearators, and it can also prevent valve opening or closing, or other accidents caused by pipeline vibration or unpredictable factors. It is very effective especially for inflammable factors. It is very effective especially for inflammable and explosive oil, chemical and medical working pipelines or field tubing. The part on the head of the stem that is installed with the handle adopts flat design. When the valve is opened, the handle is parallel to the pipeline, so that the opening and closing indications of the valve are guaranteed to have no error.

Why Choose JONLOO Valves?

Our gate valves are designed for use in demanding oil & gas industry as well as water applications.
Our gate valves are known for being affordable and dependable because we know how important it is for you to keep your facilities and operations running smoothly. We offer the unbeatable combination of low prices, fast delivery, and strong warranties on all of our products.


How to select JONLOO valve for your pipelines?

Valve design and selection of materials are key factors when determining the different oil and gas media applications of valves. The two main things that affect the valve material selection are the strength of the valve and the corrosive media going through the valve.
Strength in a valve is its ability to withstand the internal stresses generated by containing and controlling the fluid under pressure. Strength can be measured in several ways, but the most common measure is by quantifying the metal's tensile strength. Higher pressures are reserved for the stronger steel and high alloy valves as lower pressures can use lower tensile strengths such as cast iron.
The second major consideration in choosing a valve material is its corrosion resistance. Corrosion is the breakdown of a metal due to attack by various chemical reactions. The dangers of corrosion damage are particularly high in the chemical manufacturing industry where the issues of strong chemicals, high pressures and high temperatures cross paths. The harsh acids and other compounds can sometimes eat through metals such as iron and steel in a matter of days or even hours.  In valve materials, basic exterior rusting of the valve is usually secondary to the corrosion going on within the valve due to the unique characteristics of the fluid contained inside it.  In addition to the fluid going through the valve, the temperature of the flow media and the operating environment are other key factors to be considered when determining materials as it relates to corrosion.