Product Overview
The MASONEILAN 35000-250 Series 35000 Pneumatic Control Valve is a heavy-duty, single-seated globe-style throttling valve engineered for precise regulation of process fluids across demanding industrial environments. Manufactured by Masoneilan (Baker Hughes), a globally recognized authority in control valve technology, the Series 35000 utilizes a diaphragm-actuated pneumatic spring-opposed actuator coupled to a cage-guided or stem-guided valve plug assembly. The valve modulates flow in response to a pneumatic signal (typically 3–15 psi or 6–30 psi), providing accurate positioning for pressure, temperature, flow, and level control loops. Its robust construction and high-rangeability trim make it a preferred solution for throttling service in refineries, petrochemical plants, and power generation facilities.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pneumatic Control Valve (Globe-Style, Diaphragm Actuated) |
| Model Designation | MASONEILAN 35000-250 / Series 35000 |
| Valve Body Size | 2-inch (DN50) nominal — “250” size designation |
| Actuation Type | Pneumatic diaphragm actuator, spring-opposed, air-to-open or air-to-close configurations |
| Signal Range | Standard 3–15 psi or 6–30 psi pneumatic control signal |
| Operating Pressure | Standard Industrial Grade (Up to rated bar per body rating class) |
| Trim Characteristics | Equal percentage, linear, or quick-opening plug characterization |
| Mounting & Connection | Flanged (ANSI/ASME Class 150–600), standard ISO / Manufacturer Interface |
| Body Material | Carbon steel, stainless steel, or chrome-moly alloy options |
Engineering Features & Advantages
- Precision Throttling Control: The Series 35000 plug and seat design delivers high rangeability and tight shutoff, enabling accurate flow metering across varying process conditions.
- Robust Pneumatic Actuation: Large diaphragm area and heavy-duty spring provide reliable stroking force and stable positioning even under high-pressure drop service.
- Industrial Reliability: Built for continuous operation under severe industrial conditions including high temperature, corrosive media, and vibration-heavy installations.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM Masoneilan 35000 Series standards, ensuring drop-in interchangeability.
- Field-Serviceable Design: Removable trim, reversible actuator action, and accessible packing allow rapid maintenance without full valve removal.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original MASONEILAN standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
The MASONEILAN 35000-250 Series 35000 Pneumatic Control Valve is a heavy-duty, single-seated globe-style throttling valve engineered for precise regulation of process fluids across demanding industrial environments.
PRODUCT IMAGES

MASONEILAN 35000-250 Series 35000 Pneumatic Control Valve
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- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine MASONEILAN 35000-250 Series 35000 Pneumatic Control Valve. This USA-made pneumatic valve features a globe-style design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.