JONLOO knife gate valves are available in various designs, one-piece body and two-piece bodies, rising stem and non-rising stem, uni-direction and bi-direction structures, resilient and metal seat rings, bonnetless and bolted bonnet designs. For optional designs, deflection cone could divert the flow of abrasive slurries and protect valve seat from abrasion. V port disc and through conduit design are used for throttling service as per customers' requirement.
Details
Sizes: NPS2" - 48" (DN 50 - DN 1200)
Pressure Rating: Class150 or PN6 - PN16
Body material: Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel, etc.
Gate Material: Stainless Steel Chrome Plated, Special Alloy
Seat Material: Stainless Steel/EPDM (120°C) /Viton(200°C)/PTFE(200°C) /NBR(90°C)
End connection: wafer, lug or flange ends.,
Operation: Manual, Gear, Pneumatic, hydraulic and Electric actuator
Applications: Pulp & Paper, Water Treatment, Beverage & Food, Fine Chemical, Power Plant,Steel Industry, etc.
Standards
Design & Manufacture: MSS SP-61, ASME 16.34
Face to Face: MSS SP-81, ASME B16.10, EN 558
Connection End: ASME B16.5, EN 1092, JIS B2220
Inspection and Test : MSS SP-81
Features
1. Body:
a) Integral body with full bore structure ensures smooth flow, easy assembly and smaller shell leakage possibility.
b) Guide claws design at the port bottom for gate fixture, instead of a groove, eliminates any potential clogging
when valve shutoff.
2. Gate:
a) Beveled knife edge provides strong cutting stress and tight sealing.
b) PTFE resilient point guider above the port prevents metal-metal contact between gate and body.
c) Gate thickness can be increased to meet higher pressure.
3. Seat:
a) Side-entry seat is replaceable, reducing the cost of maintenance.
b) Preloaded seat is adjustable to meet different sealing class and compensate normal seat wear.
4. Other:
a) Double thrust bearing minimize the torque required for operation.
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.