Multi port ball valve Description
Multi-Port Ball Valve (Multi-Port Ball Valve) is a kind of special valve that achieves diversion, merging or flow switching of three or more media by rotating the ball core with multi-directional flow channels. Its ball core channel is T-type, L-type or cross type, can meet the complex pipeline system of multi-channel control needs.
Structure
Valve body
Integration of 3-5 flow channel interfaces (three-way/four-way/five-way), the use of integrated casting to reduce leakage points.
Multi-directional ball core
T-type ball core: three-way shunt/combined flow (such as Q45F type);
L-type ball core: switch two vertical pipeline flow direction (such as Q44F type);
Cross-type ball core: four-way valve to achieve media cross-distribution.
Valve stem and actuator
The valve stem connects the spool with the actuator (manual/pneumatic/electric), supporting 90° or 180° positioning rotation.
Sealing system
Four-sided seat design, soft seal (PTFE) or hard seal (stainless steel + tungsten carbide) construction.
Multi port ball valve specification
Specification
| Parametric | Scope |
|---|---|
| Nominal diameter | DN8-DN200 (threaded small diameter) to DN500 (flanged large diameter) |
| Pressure rating | PN10-PN40 (conventional) to PN250 (high pressure PEEK seals) |
| Temperature range | -196°C (deep freeze) to +450°C (hard seal) |
| Driving method | Manual handles, worm gears, pneumatic actuators, electric actuators |
Material
| Parts | Material |
|---|---|
| Valve Body/Bonnet | Stainless steel (304/316L), carbon steel (WCB), duplex steel (2205) |
| Ball core | Stainless steel hardened, ceramic coated (wear resistant conditions) |
| Seat Seal | PTFE (≤180℃), PEEK (≤250℃), metal hard seal (high temperature and high pressure) |
Production and Testing Requirements
1. Production standards
Design specification: API 6D (pipeline valves), ISO 14313 (general requirements for industrial valves);
Fire safety: API 607 fire resistance test (hard seal structure needs to pass 30 minutes 760 ℃ combustion);
Special media: oxygen valves need ASTM G93 degreasing treatment (oil ≤ 125mg/m²).
2. Mandatory testing items
Strength test: 150% of the nominal pressure hydrostatic test, holding time ≥ 3 minutes without deformation;
Seal test: 110% nominal pressure gas tightness test, leakage rate ≤ ISO 5208 A class;
Flow test: verify the accuracy of media switching of T-type / L-type pathway;
Life test: ≥ 100,000 switching cycles still meet the sealing requirements.
Multi port ball valve
Advantage
One valve with multiple controls
Single valve replaces multiple 2-way valve groups, simplifying piping layout by more than 40%.
Zero dead-end flow
Full bore design avoids media stagnation and meets food/pharmaceutical aseptic requirements.
Fast Response
90 ° rotation to achieve flow switching, pneumatic actuator response time ≤ 1 second.
High compatibility
Suitable for particulate media (such as hard seal anti-clogging design) and corrosive fluids.
Applications
| Industry | Applications | Function |
|---|---|---|
| Petrochemicals | Catalytic cracking unit reactor switching, oil blending and distribution | Enables safe switching of multiple media to avoid cross contamination |
| Pharmaceutical food | Multi-recipe raw material pipeline distribution, CIP cleaning system flow control | Ensures precise fluid guidance in a sterile environment |
| Preliminary treatment | Backwash systems, multi-tank channel control | Reduced number of valves and lower failure rate |
| Air separation equipment | Liquid Oxygen/Liquid Nitrogen Tank Filling and Discharge Switching | Leakage prevention and safety in deep-cooling conditions |
| Experimental setup | Multi-reactor feed path selection | Improve the efficiency of experiment process automation |
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