How does DM Butterfly Valve solve the problem of high-pressure sand wear in oil production?

In the field of oil drilling and production, especially in deep, ultra-deep or shale oil and gas development, the severe erosion and wear of valves caused by high-speed sand carried by high-pressure fluids has always been a key pain point that plagues production efficiency and equipment life. Traditional valves often face problems such as seal failure, valve plate perforation, sharp increase in operating torque, and even stuck in this environment, resulting in frequent shutdown and replacement, high maintenance costs and production losses. In response to this stubborn disease, DM butterfly valve, with its innovative triple protection design, is becoming an effective solution for the industry to deal with high-pressure sand wear.

The dilemma of traditional valves: the pain of sand

Driven by high pressure (often thousands of psi or even higher), tiny solid particles in the fluid (such as fracturing sand, formation sand) are like countless high-speed micro "bullets", constantly impacting the key parts of the valve:

Sealing surface damage: Causes medium leakage, affects system pressure control and environmental compliance.
Valve plate/seat surface erosion: Forms grooves or holes, destroying the structural integrity of the valve.
Wear of key rotating parts: Increase operating torque, and even cause the valve to get stuck and unable to open and close.
DM butterfly valve's solution: triple protection, hard-core wear resistance

The core competitiveness of DM butterfly valve lies in its targeted wear-resistant optimization design:

Core material upgrade: carbide armor

High-hardness surfacing layer: Stellite 6 alloy or other high-hardness, erosion-resistant cobalt-based/nickel-based alloy materials are surfacing on the valve plate edge, valve seat sealing surface and other areas most susceptible to erosion. The hardness of these materials is much higher than that of ordinary steel, and they can effectively resist the cutting and impact of sand particles.
Toughness of base material: The valve body and valve plate body are made of high-strength and excellent toughness carbon steel or stainless steel (such as ASTM A216 WCB, A351 CF8M) to ensure the strength and impact resistance of the overall structure under high pressure.
Structural optimization design: reduce friction and guide flow field

Double eccentric/triple eccentric structure: This is the key to DM wear-resistant butterfly valve. When opening, the valve plate quickly detaches from the valve seat sealing surface, greatly reducing the friction contact distance and time between the valve plate and the valve seat during the opening and closing process, and greatly reducing the risk of direct wear of the sealing pair by sand-containing media. When closed, a tight seal is achieved.
Optimized streamlined valve plate design: It helps to guide the fluid to pass smoothly, reduce turbulence and eddy currents, and thus reduce the impact of local high-speed scouring on the valve plate surface.
Sealing system reinforcement: reliable sealing, tolerant to impurities

Multiple sealing guarantees: Combining the wear resistance of metal seals (carbide surfaces) with the auxiliary sealing capabilities of high-performance elastomers (such as PTFE, PEEK filling) or special composite materials, reliable sealing performance can be maintained even after slight wear or when the medium contains trace impurities.
Sealing surface geometric accuracy: Precision machining ensures perfect fit of the metal sealing surface, reducing the possibility of sand embedding or uneven wear.