The NAKAKITA NS737S-D is a heavy-duty industrial pneumatic valve positioner engineered for precise stroke control of linear and rotary actuators in demanding process environments. It converts a pneumatic control signal into a proportional valve stem position, ensuring accurate positioning and rapid response under varying load conditions.
NAKAKITA NS737S-D Technical Specifications
| Type | Pneumatic Valve Positioner |
|---|---|
| Input Signal | 3–15 psi (0.2–1.0 bar) pneumatic |
| Supply Pressure | 20–100 psi (1.4–7.0 bar) |
| Action | Single or double acting, field reversible |
| Stroke Range | 10–100 mm linear; 0–90° rotary |
| Air Connections | 1/4 NPT |
| Enclosure | IP66, die-cast aluminum housing |
| Operating Temperature | -20°C to +80°C |
| Mounting | NAMUR / IEC 60534-6 standard |
Key Engineering Features
- Force-balance pneumatic feedback mechanism for stable, repeatable positioning
- Zero and span adjustments accessible without disassembly
- Low air consumption with high flow capacity for fast stroking
- Corrosion-resistant internal components for extended service life
- Field-reversible action and split-range capability
Industrial Applications
- Chemical and petrochemical process control loops
- Oil and gas flow regulation and pressure control
- Power plant steam and water valve actuation
- Pulp and paper stock and chemical dosing systems
- Water treatment and industrial fluid handling
For technical inquiries, dimensional drawings, or replacement support for NAKAKITA NS737S-D, contact the Pro-Hydraulic engineering team.
PRODUCT IMAGES


NAKAKITA NS737S-D Pneumatic Valve Positioner
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- 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 NAKAKITA NS737S-D Pneumatic Valve Positioner. This precision-engineered industrial component delivers reliable performance and tight fluid control for heavy-duty systems.