The D37TS Series is a high-performance, speed-adjustable high airtightness  positive/negative pressure diaphragm pump, specifically engineered for applications demanding extremely low leakage rates and uncompromising reliability. At its core is a 304 stainless steel pump head and a proprietary ultra-seal structure, enabling it to achieve an aggressive -90 kPa relative vacuum and deliver up to +300 kPa output pressure (D37TSP model). Powered by a robust BLDC motor and rated IP66 for dust and water resistance, the D37TS provides industrial-grade, continuous-duty performance for gas analysis, sampling, and high-seal pneumatic systems.

Superior High Airtightness & Low Leakage Performance

This pump is professionally designed for high-airtight working scenarios and adopts a special low-leakage sealing structure. Every product is fully inspected for airtightness before delivery to ensure an extremely low gas leakage rate, which fully satisfies the strict sealing standards of analytical instruments. It is fitted with a 304 stainless steel pump head, matched with EPDM diaphragms, EPDM check valves and FKM sealing components. The mature material combination maintains stable sealing performance even during long-term continuous operation and effectively prevents gas leakage.

High Vacuum & High Pressure Dual Performance

The series includes two core models. D37TSV high vacuum version can reach a maximum relative vacuum of -90 kPa with a maximum output pressure of 50 kPa, perfectly suited for high-vacuum gas sampling and extraction work. D37TSP high pressure version provides stable output pressure up to 300 kPa and a relative vacuum of -65 kPa, ideal for high-pressure gas delivery and circulation tasks.

If a smaller size and lower flow rate high-tightness pump is required, please refer to D15TS.

Long Service Life & Continuous Heavy-Duty Operation

Supported by a well-optimized internal structure, the pump can run continuously under heavy loads. Its full load design life reaches 5000 hours, and no-load design life is 7000 hours. The built-in BLDC brushless motor features a design life of 10000 hours, realizing round-the-clock non-stop operation. Meanwhile, it adopts low electromagnetic interference design and will not cause interference to surrounding precision electronic equipment, with excellent pressure resistance and mechanical stability for long-cycle industrial use.

 

 Flexible Speed Regulation & Multi-protection Functions

The D37TS pump with brushless DC motor offers flexible speed regulation and comprehensive protection functions. For speed control, the pump supports PWM speed regulation, where the flow rate can be precisely adjusted by varying the motor speed via an external PWM signal.the pump integrates stall protection, over-current protection, and reverse polarity protection, which minimize the risk of accidental damage under high-load conditions, power supply faults, or misoperation, ensuring reliable operation in demanding applications.

 

IP66 Protection for Harsh Environments

With a fully sealed pump body and motor, the D37TS achieves an IP66 protection rating. It is completely dust-tight and protected against powerful water jets, ensuring reliable gas transfer even in outdoor, wet, or dusty industrial environments.

Flexible High-Seal Port Connections

Installation is easy with multiple high-integrity port options. Choose the standard Rp1/8 female thread, or select optional K6 quick-connect fitting (for 6×4mm PU tubing) or a 6mm ferrule-type fitting (for stainless steel tubing) , allowing you to integrate the pump into virtually any high-seal pneumatic system.

BLDC Brushless Motor & Low EMI

Built-in high-efficiency BLDC brushless motor, featuring low electromagnetic interference, stable operation, low noise, and low power consumption. Support PWM speed regulation, start-stop level control, and real-time speed feedback for closed-loop system monitoring.