Cage-Trimmed Noise Reduction Control Valve
Cage Trim · DN25–DN300 · PN16/PN40 · -10 to -15 dBA
Reguvale's cage-trimmed noise reduction control valve is engineered for high pressure drop, gas / steam and two-phase service where conventional valves suffer from cavitation, vibration and 95+ dBA aerodynamic noise. The multi-orifice cage breaks a single high-pressure drop into a series of small, controlled stages, reducing noise by 10-15 dBA and eliminating cavitation damage.
Available in single-stage, two-stage and multi-stage cage geometries matched to your specific pressure ratio and media. SS316 / Stellite trim and metal-to-metal seat handle steam, hot oil and gas at sustained +425°C. Pneumatic diaphragm or electric-motor actuator delivers modulating stroke with 4-20 mA positioner.
Standard sizes DN25–DN300 in PN16 / PN40 cover most steam let-down, gas pressure reduction and high-ΔP hydrocarbon service.
Key Features
10-15 dBA Noise Reduction
Multi-orifice cage breaks a single pressure drop into many small stages, cutting aerodynamic noise below OSHA 8-hour exposure limits.
Anti-Cavitation Design
Multi-stage geometry prevents bubble collapse near the trim, eliminating cavitation pitting and seat erosion in liquid service.
Stage Tuned to Service
Single-, two- and multi-stage cages matched to your pressure ratio and media for optimum noise / cavitation trade-off.
High-Temperature Trim
SS316 / Stellite-faced trim and metal seat handle steam, hot oil and gas at sustained +425°C.
Field-Serviceable
Cage, plug and seat ring can be replaced without removing the body from the line, simplifying stage upgrades.
Pneumatic or Electric
Multi-spring diaphragm or reversing-motor actuator with 4-20 mA / HART positioner.
Technical Specifications
| Parameter | Specification |
|---|---|
| Body Material | WCB Carbon Steel (std) / SS316 / Alloy |
| Plug / Trim | SS316 / Stellite Faced / 17-4PH |
| Seat Material | SS316 / Stellite (metal-to-metal) |
| Body Type | Cage-guided globe, single/multi-stage |
| Size Range | DN25 – DN300 (1" – 12") |
| Pressure Rating | PN16 / PN40 (ANSI 150 / 300 on request) |
| End Connection | Flanged (ISO 7005-2 / ASME B16.5) |
| Flow Characteristic | Equal-Percentage / Linear |
| Stage Count | 1 / 2 / 3+ stages (application-tuned) |
| Actuator Type | Pneumatic diaphragm / Electric motor |
| Control Signal | 3-15 psi / 4-20 mA / On-Off |
| Positioner | YT-1000 / YT-1050 / Smart digital |
| Temperature | Up to +425°C |
| Noise Reduction | 10 - 15 dBA vs. standard globe |
| Cavitation Index | Kc > 0.5 (no cavitation damage) |
| Standards | IEC 60534 / GB/T 4213 / ANSI/ISA-75.17 |
| Certification | ISO 9001:2015, SGS MTC available |
Frequently Asked Questions
Why choose a cage-trimmed valve over a standard globe?
In high pressure drop, gas or steam service a standard globe produces 95+ dBA noise and suffers cavitation pitting. A cage-trimmed valve cuts noise 10-15 dBA and prevents cavitation by staging the pressure drop.
How many stages do I need?
It depends on your pressure ratio and media. Single-stage for low ΔP.
Two-stage for steam let-down and gas pressure reduction.
Multi-stage for severe ΔP and two-phase hydrocarbon service.
Is it suitable for steam let-down?
Yes - cage-trimmed valves are the industry standard for steam turbine bypass and steam let-down stations where noise and erosion must be controlled.
Applications & Use Cases
Steam Let-Down Stations
Boiler and turbine bypass steam pressure reduction with low noise and long seat life.
Gas Pressure Reduction
Natural gas pressure-let-down from transmission to distribution pressure with low noise.
Refinery & Petrochemical
Hydrocracker let-down, FCCU slurry and reactor effluent pressure control.
Compressor Anti-Surge
High-ΔP recycle loop around gas compressors with anti-surge modulating duty.
