三通球阀

Product Overview

Key Features

1. Core L Port Orthogonal Flow Channel, Accurate Reversing Without Cross Flow

   产品全面聚焦于 L port. The internal flow channel of the ball is a 90° right-angle L-shaped structure, which is a special flow channel built for medium reversing switching. Through 90° rotation of the ball, it can realize the either-or precise switching between the inlet and two outlets (when A→B is connected, port C is completely closed; after 90° rotation, when A→C is connected, port B is completely closed). It cannot realize simultaneous connection of three channels, fundamentally eliminating the problem of medium cross flow and mixing from the structure.

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   The flow channel adopts full bore design, the inner wall is mirror polished with rounded smooth transition, with low fluid resistance and no medium retention dead angle, suitable for high viscosity and small particle-containing medium working conditions. Standard equipped with four-seat bidirectional sealing structure, which can realize reliable sealing in both forward and reverse directions. Any channel can be used as an inlet, with extremely strong installation adaptability.

   

2. Structure Optimized for Working Conditions, Stable Operation Without Jamming

   Accurate structure matching according to diameter and pressure: Floating ball structure is standard for DN15-DN50, which realizes self-tightening sealing by medium pressure, the higher the pressure, the tighter the seal; trunnion mounted double support structure is standard for DN65-DN300, the ball is equipped with high-precision fixed support shafts on the upper and lower sides, no radial offset and no extrusion deformation of the ball under high pressure working conditions, the opening and closing torque is constant and stable, which completely solves the industry pain points of sudden torque increase, uneven wear of sealing surface and opening jamming of floating ball structure under large diameter and high pressure.

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3. Full Coverage of Double Sealing Options, Zero Leakage & Long Service Life

   Provide exclusive sealing solutions for different working conditions with full adaptability:

   1. Soft seal type: Standard equipped with PTFE/PPL/PEEK wear-resistant valve seat, paired by high-precision grinding with the ball, the sealing grade reaches ANSI B16.104 Class VI bidirectional zero leakage, suitable for normal temperature and clean medium working conditions;
      

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   2. Metal hard seal type: The sealing surface of the ball and valve seat is plasma spray welded with Stellite hard alloy and tungsten carbide, with surface hardness up to HRC40-65, high temperature resistance, erosion resistance and anti-seizure, suitable for harsh working conditions such as ≤450℃ high temperature and particle-containing media. Built-in spring self-tightening valve seat structure, which can automatically compensate for thermal expansion and contraction under high and low temperature working conditions, avoiding sealing failure and opening jamming caused by temperature alternation.

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4. Standard Industrial Connection, Easy Installation & Wide Adaptability

   GB/T 9113 and ASME B16.5 standard flanged connection is the core standard configuration, with standard RF raised face sealing surface, optional RTJ ring joint face sealing for high pressure working conditions. It can be directly and seamlessly connected with domestic and foreign industrial pipelines of the same standard without modification and adaptation, with convenient installation and maintenance. Small diameter DN15-DN50 can choose NPT/BSP/Rp standard internal thread connection, suitable for equipment built-in and narrow space installation scenarios.

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5. Full Drive Mode Adaptation & Multiple Safety Structures, Industrial-Grade Stable & Durable

   Full coverage of drive modes: standard manual handle, optional worm gear, pneumatic and electric actuators, which can easily realize local manual operation and remote automatic control, adapting to various industrial automatic control systems.

   The full series is equipped with industrial-grade safety protection as standard: anti-static structure, bottom-mounted T-type blow-out proof stem, API 607 fire-safe structure, which fully eliminates potential safety hazards such as electrostatic explosion, stem rushing out and medium leakage. The handle is designed with 90° precise limit and lock hole, which can be equipped with a lock to prevent misoperation, stable and reliable for long-term operation.

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电站及锅炉用超高压小口径管道，要求

产品概述