Duplex Needle Valves

INSTINOX believes that to excel- it requires no rocket science, it just requires a tough grind and a set of inimitable processes. These processes when performed with great coordination and willingness- results in creating history. We also provide our clients with immediate delivery with customised packing according to their requirements. Our high-quality low-priced products make us distinct from the others in the industry. Being one of the most popular Indian manufacturers and suppliers, as rated by the industry, we assure you of repetitive orders and our belief in never compromising on the quality of the duplex needle valves. Being the producers of best quality needle valves, we are open to anyone who can challenge us with our prices. We just do not play with words, we deliver what we promise. Just place the order, and with our prompt reply, our clients do not have to wait to receive the goods.

About duplex as an alloy:
Duplex stainless steels are double the strong than other alloys. It is a mixture of attractive features of many alloys. It is called as a duplex, as its molecular structure consists of both nickel-chromium properties. Duplex has high mechanical strength, it also has an excellent resistance quality. This combination of stainless steel gives the stainless steel family a new and a strong addition. Duplex needle valves are very much considered in the chemical industry, in gas and oil refineries, in seawater applications etc.

About needle valves:
Duplex Needle valves manufacturers are in simple words, an instrument which helps in controlling, deviating the flow of the liquid from the passageways. We, here at Instinox, have a precisely detailed strategy for manufacturing needle valves. A needle valve regulates the path from which the liquid should travel. It is a movable and a changeable option in a machine, mainly meant for change in direction. We can say that a needle valve is an equipment which deviates or differentiates the flow from its original path. It is the best option considered for obstructing the flow, way of the loose material.
Needle valves have a tapered opening at the other side making the fluid flow in a controlled way. In addition, stainless steel needle valves have an added advantage of highest durability than the other elements. It allows precise regulation of the flow of fluid, although it is generally only able of relatively low flow rates. There is a volume control valve, which helps in controlling the pressure of the fluid flow. Needle valves have different openings at both the ends, designed mainly for controlling the flow of the liquid.
The loose material goes through the valve turns ninety degrees and then passes through an aperture that is the seat for a rod with cone shaped tip. An aperture is basically is an opening, just as in the case of the human body. The size of the opening is changed by locating the cone in alliance to the seat. Needle valves are more often used to control flow into damaged by the sudden direct flow of fluid under pressure. Needle valves are moreover used to control the closure of a work cycle, where it is covetable for a motion to be brought slowly to a halt and at other points where particular adjustments of flow are mandatory and where a small rate of flow is expected. Instrumentation equipment and can be installed to control, equalise, calibrate, measure, drain, isolate or vent (an opening that allows gas or liquid to pass out of or into a confined space) the pressure of gases and liquids. Needle Valves come in various styles, sizes, end connections and stem types. They are available in forged construction as well as bar stock. We have needle valves available, as per the specifications provided by the clients. We do customization in the packing and packaging, on the basis of the weather conditions and the modes of transportation.

A duplex needle valves suppliers uses a tapered (reduce in thickness towards one end) pin to slowly open up space for subtle control of flow. The flow can be controlled and regulated with the use of a spindle (a slender rounded rod with tapered ends). A duplex needle valve has a comparatively small opening with a long, tapered seat, and a needle-shaped plunger (part of a device or mechanism that works with a plunging) on the end of a screw, which exactly fits the seat. As soon as the screw is turned and the plunger retracts, flow is possible between the seat and the plunger, however, until the plunger is completely retracted, the fluid flow is significantly impeded. Since it takes many spins of the fine threaded screw to retract the plunger, precise regulation of the flow rate is possible. The virtue of the needle valve is from the vernier (a vernier scale is a device that lets the user measure more precisely than it could be done unaided when reading a circular measurement scale) effect of the ratio between the needle’s length and its diameter, or the difference in diameter between needle and seat. A long travel axially (control input) makes for a very small and significant change radially (affecting the resultant flow).Needle valves may also be used in vacuum cleaner systems, when a specific control of gas flow is required, at low pressure, such as gas filled vacuum tubes, gas lasers and similar devices. We are our merchandisers, who have helped us in gaining an advantage and a trusted brand in the whole market. Here, you just place the order, and we are there to look after the rest.

Hundred percent in-house testing of goods.
Less than one percent rejection rate of our products.
Blunt tip in the stem.
Differential hardness between the strains.
Hardened stem and cold formed body threads.
The life cycle of the product is improved.
Choice of PTFE packing or Elastomeric O-ring
A tapering needle valve in the end.
Less than one percent rejection rate.
Inline and angle patterns.
Wide variety of US Customary and SI ports
Mountable panels.
Option for colour coded handles.

Duplex needle valves, having the unique properties, are mostly considered in chemical industries. Applications in which consistent and limited flow are required do require needle valves for their completion. Duplex Needle valves are used especially when a consistent, measured, low flow rate must be upheld for some time, such as the stagnant fuel flow in a carburettor. Needle valves are used in changing the direction of the flow.
Take to mind that the float valve of a carburettor (controls the fuel level within the carburettor) is not a needle valve, although it is described as one. It uses a blunt conical needle, but it seats against a square edged seat rather than a matching cone. The aim here is to obtain a well-defined set between two narrow joining surfaces, giving firm shutoff of the outflow from only a light float pressure. Since flow rates are less and many bends of the valve stem are required to fully open or close, needle valves are not used for simple shutoff applications.
The force advantage of the fine threaded stem is more since the opening is narrow, Needle valves are usually easy to shut off completely, with solely finger tight pressure. The spindle of a needle valve made from brass, when shutting off the flow can be easily damaged by extra turning force. Small simple needle valves are often used as bleed valves (hydraulic valves that combine one or more block/isolate valves,) in water heating applications. It is not easy to tell from examining the handle position and check whether the valve is open or closed, unlike a ball valve or valves with a resting stem.

We are an ISO certified firm, and we have also fulfilled other industry requirements. We have the best practices in manufacturing till date. Due to our high-quality standards, we have an overwhelming record of less than one percent rejection rate. We follow a hundred percent in house checking of goods, before taking it any further. High-quality products coupled with defect free products and optimised use of technology is surely a thing not indulged into by anyone in the whole industry.