Three-quarter view of a stainless Venturi airflow control valve with actuator

Hệ thống phân phối không khí phòng sạch

Van điều khiển luồng khí Venturi

A characterized stainless Venturi valve whose spring-compensated cone preserves the commanded airflow as duct static pressure varies.

Pressure-Independent Flow Response
Spring-Compensated Venturi Cone
Fast Commanded Repositioning
Corrosion-Resistant Air Path

Yêu cầu báo giá Duyệt các sản phẩm

Giới thiệu Sản phẩm

The Venturi airflow control valve uses a shaped throat and movable cone to create a repeatable relationship between cone position and airflow. A mechanical spring shifts the cone in response to duct-pressure change, while the actuator establishes the opening required by the control command. Because pressure compensation occurs inside the valve body, the controller can respond without continuously deriving airflow from a separate duct sensor. Stainless wetted components and an external actuator make the assembly suitable for supply, general exhaust and laboratory exhaust duties.

Các tính năng chính

A calibrated Venturi throat and cone produce a stable position-to-airflow characteristic over the operating range.

Mechanical spring compensation reacts directly to static-pressure variation before the room-pressure loop drifts.

A fast external actuator supports fume-hood tracking and rapid room supply-to-exhaust balance changes.

Smooth stainless internal surfaces and external drive components reduce residue traps in demanding exhaust service.

Các mối quan tâm về sản phẩm của khách hàng

Critical-room airflow control must remain repeatable through duct-pressure swings, react quickly to demand and tolerate contaminants without a drifting measurement element.

A fan-speed change alters several branch flows before the room pressure loop can recover.The spring-loaded cone compensates mechanically for the duct-pressure change at each valve.

Fume-hood sash movement requires a large exhaust change within seconds.A characterized cone and fast actuator move directly to the airflow position commanded by the hood controller.

Dust or chemical residue blocks small pressure-sensor ports in an exhaust branch.The pressure-independent cone mechanism controls flow without small in-stream averaging taps.

Mismatched supply and exhaust response reverses the intended room pressure direction.Coordinated valve commands and known flow-position curves maintain the scheduled offset between room air paths.

Các ứng dụng điển hình

Pharmaceutical room pressure controlLaboratory fume-hood exhaustCleanroom supply and return trackingAnimal research ventilationHealthcare isolation-room airflow

Thông số kỹ thuật

Representative construction ranges for a stainless Venturi airflow control valve are shown below.

Vật liệu lõi	304 or 316 stainless-steel Venturi body with spring-compensated cone and stainless linkage
Độ dày bảng điều khiển	1.0–1.5 mm formed Venturi body wall
Chiều rộng hiệu quả	152–356 mm nominal round duct diameter
Chiều dài tối đa	Up to 1200 mm overall body length including transition sections
Thép đối mặt với độ dày	1.2–2.0 mm stainless mounting flange and actuator support plates
Mật độ lõi	Approximately 8000 kg/m³ for 304 or 316 stainless-steel airflow components
Độ dẫn nhiệt	14–16 W/(m·K) through the 304 or 316 stainless Venturi body at room temperature
Kết thúc bề mặt	Smooth mill-finish or passivated stainless air path with protected external actuator
Loại khớp nối	Round flanged or slip-fit Venturi body with guided cone shaft and external direct-coupled linkage
Tùy chỉnh	Có sẵn dựa trên ứng dụng dự định và môi trường hoạt động.

Các tùy chọn có sẵn

Constant-volume or variable-volume controlSupply, general exhaust or coated corrosive-exhaust constructionAnalog or BACnet-compatible controllerFail-safe actuator and position feedback

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