Product Details

Design Feature+

1. API specifications

As we all know, API609 has in fact become the international standard for valves used in important industrial pipelines. Xinluoke is designed and manufactured in strict accordance with the latest version of API609 specifications. What’s more valuable is that the basic design of Xinluoke butterfly valve is not limited to API specification. It can correspond to BS5155, ANSI B 16.34, ASME SEC VIII and other major specifications. This ensures that Xinluoke butterfly valve can be used in all industrial fields. Useful.

2. bi-direction sealing design

The three-eccentric metal hard-sealed butterfly valve realizes two-way sealing, and can bear pressure in both directions, and no internal leakage occurs when the pressure is positive or reverse.

3. Double safety structure

In strict accordance with API609 specifications, in order to prevent the deformation of the butterfly plate caused by the influence of fluid pressure and temperature, the dislocation of the valve stem, and the sealing surface occlusion, two independent thrust rings are installed on the upper and lower sides of the butterfly plate. Ensure the normal operation of the valve under any working conditions;

At the same time, in order to prevent unexpected accidents caused by the damage of the valve stem caused by unknown reasons, two independent valve stem fly-out prevention mechanisms are designed inside and outside the lower end of the valve, which also guarantees the pressure level of the butterfly valve from the side. Achieve up to 2500 pounds.

4. No dead zone design

In the design process, special consideration was given to application issues in the field of control, and the sealing principle of the triple eccentric butterfly valve was fully utilized to achieve an open angle design without dead zone, thereby eliminating the common opening jump phenomenon when opening ordinary valves. Eliminates the inability to adjust the valve due to various unstable factors such as friction in the low opening range of the valve, that is, eradicates the dead zone (non-sensing band), which means that the Xinluoke butterfly valve can almost start from 0 opening. Control the area up to 90 degrees of opening. The normal control ratio is more than 2 times that of ordinary butterfly valves, and the highest control ratio can be as high as 100:1. This creates good conditions for the use of Xinluoke butterfly valve as a control valve, especially when the diameter is large, the cost of the shut-off valve is extremely high, and the shut-off valve cannot achieve zero leakage. It must be shut off in conditions that require emergency shutdown. A shut-off valve is installed on the side of the valve, and the Xinluoke butterfly valve integrates control and shut-off, and its energy saving is extremely impressive.

5.Valve seat structure

There are two valve seat installation structures for triple eccentric butterfly valves. Most of them are laminated stainless steel sheets and graphite sheets to be installed on the butterfly plate. The sealing surface is easily eroded by fluids, and the service life of the valve seat is very short. But Xinluoke butterfly valve adopts all-metal alloy steel forged valve seat structure. Its advantages are erosion resistance, wear resistance, high temperature and pressure resistance, and long service life, which is unimaginable for double eccentric butterfly valves or other triple eccentric butterfly valves.

6.Replaceable sealing pair

The sealing pair of Xinluoke butterfly valve is unique. Since the sealing surface of the butterfly plate and the butterfly plate are independent, the valve seat and the valve body are also independent, so the sealing surface of the butterfly plate and the valve seat can be replaced at the same time, that is to say, when the butterfly plate is sealed When the surface or valve seat is damaged, there is no need to rush to transport it back to the manufacturing plant or disassemble the valve, just replace the butterfly plate sealing surface and valve seat. This not only greatly reduces maintenance costs, but also greatly reduces maintenance man-hours and overhauls. Intensity and difficulty.

7.Balanced fixed structure

Starting from the shape and characteristics of the sealing surface of the triple eccentric butterfly valve, the sealing pair of the Xinluoke butterfly valve adopts a balanced distribution fixing method, which not only has accurate positioning, but also makes each bolt receive a balanced force, preventing uneven stress distribution. The sealing pair is loose and leaking.

8.Intrinsic refractory structure

Many valves claim to have a fire-resistant structure, but most of them use a soft and hard double seat structure in order to reduce leakage. In fact, this is very dangerous because incomplete combustion of the soft seal seat will cause the metal to support the seat. Stress, temperature difference and deformation will cause the refractory function to fail. Therefore, Europe and the United States are gradually eliminating this kind of false refractory valve. Because it has zero leakage, it does not require the help of a soft seal, and it is a veritable essential fire-resistant structure.

9.Dynamic load packing system

In terms of valve leakage, traditionally, the leakage of the valve seat is often concentrated, that is, internal leakage, and the leakage of the packing part, that is, external leakage is ignored. In fact, it is an indisputable fact that in the contemporary society where environmental issues are increasingly valued, leakage is far more harmful than internal leakage. The triple eccentric butterfly valve is a rotary type valve, and its stem movement is only 90 ° rotation. Compared with the valve stem movement of gate valves and globe valves, which are spiral multi-turn reciprocating movements, the degree of wear on the packing part is very low. The service life is very long, and the dynamic load standard design is adopted for the external leakage prevention structure such as the packing seal, so that the standard sealing performance can be guaranteed to be below 100ppm when the external leakage test is performed in accordance with EPA21 specifications. These indicators all mean that it can be used in toxic and hazardous media pipelines in various fields such as chemical industry.

In summary, the triple eccentric butterfly valve, as the crystallization of the latest valve technology, will take advantage of the advantages of various valves and avoid the shortcomings of various valves, and it will certainly receive more and more attention from users and designers. The maximum pressure level can reach 2500 pounds, the standard caliber can reach 48 inches, and the clamp, lug, flange, butt welding, various structural lengths, etc. can be corresponded, and because of the large choice of butterfly valve materials, High and low temperature, various acids, alkalis and other corrosive media can also respond freely. Especially in terms of large diameter, with its advantage of zero leakage, it is constantly replacing large gate valves and ball valves in shut-off valves. Similarly, with its excellent control function, the control valve is constantly replacing the bulky stop valve.

Design Standard+

Design & Manufacture: ANSI16.34,BS 5155,JIS B2071,DIN 3354.

Face-to-face Dimension: API 609, ISO 5752,DIN 3202,BS 4504,JIS B2002 .

Flanged Ends: ANSI B16.5, MSS-SP-44, ISO 7005 ,BS 4504.

Butt-weld Ends: ANSI B16.25.

Pressure Test: API 598, ISO 5208, BS 5146.

Technical Specification+

Metal sealing system

High hardness, erosion resistance, wear resistance, high temperature resistance

Alloy steel HRC30-45 degrees

Stellite alloy HRC40-60 degrees

Tungsten carbide HRC 70 degrees or more

Material Option+

· Body&Disc: Carbon steel(WCB,LCB)

· Stainless steel(CF8,CF8M,CF3,CF3M) /

· Duplex stainless steel(4A,5A,6A) /

· Hastelloy alloy(N-12MV,CW-12MW,CW-2M) /

· Inconel alloy(CY-40,CW-6MC) /

· Monel alloy(M35-1) /

· Aluminium bronze alloy(C95400,C95500,C95800,AB2C)

· Stem: SS420 / 17-4PH / F51/ F53 / XM-19 / Monel-K500 / Inconel-625 / Hastelloy-276 / Titanium

· Disc Sealing: A105+Nitriding / A105+STL / F304+ Nitriding / F304+STL / F316+ Nitriding / F316+STL

· Body Seat: A105+Nitriding / A105+STL / F304+ Nitriding / F304+STL / F316+ Nitriding / F316+STL

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