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D28 Speed-Adjustable Positive Negative Pressure Diaphragm Pump
D28 Speed-Adjustable Positive Negative Pressure Diaphragm Pump
Equipped with optional brushed DC motors (DC) and brushless DC motors (BL/BA), the D28 caters to diverse application demands from cost-effective solutions to long-life high-reliability scenarios. Featuring modular replaceable gas nozzles, 360° rotatable air inlets/outlets, and multiple self-protection mechanisms, it offers unrivaled flexibility and durability for gas sampling, analytical instruments, medical equipment, and industrial driving systems. With low electromagnetic interference, low noise, and excellent air tightness, the D28 sets a new standard for micro diaphragm pumps in terms of total life cycle cost performance.
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Overall Descriptions
Compact Size with High Flow & Dual Pressure
Multiple Motor Options & Long Lifespan
Modular Connections for Diaphragm Pump
This mini gas pump offers comprehensive connection compatibility with multiple standard fitting options including 4mm hose connector,quick-connect PC6, as well as internal threaded Rp1/8 and NPSC1/8 connections.
Low Noise & Low Electromagnetic Interference
Optimized structural design ensures low operating noise and minimal electromagnetic interference, complying with industrial EMC standards and suitable for precision instrument and medical equipment applications.
Advanced Multi-Protection System
This model features intelligent self-protection with stall protection, over-current protection, and reverse-connection protection. This comprehensive safety system actively prevents damage from high-load conditions, power supply faults, or operational errors, ensuring uninterrupted performance and extended service life.
Industrial-grade Reliability
In response to industrial-grade reliability requirements, we have designed a special test process for possible load conditions. Therefore, no matter what load the product actually works under, its actual service life can reach and exceed its nominal service life. If the actual working load is less than the nominal maximum load, its life can be further extended. Therefore tt can operate without stopping for a long time under the maximum load. The product has passed the life test under the maximum load, and can promise to reach the nominal life under various loads.
Speed Control Function
The mini gas pump’s flow rate can be adjusted by controlling the motor speed. For brushless motor (BLDC) models, speed regulation is achieved by adjusting the PWM duty cycle.
Technical Infomation
D28 PERFORMANCE DATA
Model | D28LS-BL | D28LS-BA | D28LS-DC |
Material Option | Diaphragm: EPDM Valves: EPDM Pump Head: PPS | Diaphragm: EPDM Valves: EPDM Pump Head: PPS | Diaphragm: EPDM Valves: EPDM Pump Head: PPS |
Voltage(V DC) | 12/24 | 12/24 | 12/24 |
Max. Load Curren(A) | <0.3/0.15 | <0.4/0.2 | <0.3/0.15 |
Max. Average Flow rate(L/min) | >2.5/2.5 | >3/3 | >2.8/2.8 |
Max. Peak Flow rate | >4/4 | >5/5 | >4.5/4.5 |
Max. Vacuum (-kPa) | >50/50 | >50/50 | >50/50 |
Max. Pressure(kPa) | >40/40 | >40/40 | >40/40 |
D28 CONFIGRATION OPTIONS
Material Options | |
Pump Head | PPS |
Diaphragm | EPDM |
Valves | EPDM |
Motor | BLDC/BDC |
Connector Options | |
H4 hose connector/ PC6 push-in quick connector /Rp1 /8 internal thread /NTSC1 /8 internal thread | |
Function Options | |
PWM Speed Control Type |
D28 RELIABILITY DATA
Models | D28 | ||
Versions | Simplified(DC Motor) | Standard(BL Motor) | Premium(BA Motor) |
Fully Loaded Lifetime(hrs) | 2000 | 7000 | 12000 |
Unloaded Lifetime(hrs) | 3000 | 10000 | 15000 |
Motor Lifetime(hrs) | 5000 | 12000 | 18000 |
Test conditions | Fully-loaded lifetime: Pumps are fully loaded under rated voltage ,the inlet is blocked, and the outlet is directly connected to the atmosphere; the fully-loaded lifetime represents the continuous operating life under the most extreme and harsh working conditions. When the actual working condition is intermittent use or the working pressure is lower than the maximum rated pressure, the product lifetime will approach the unloaded lifetime Unloaded lifetime: Both the inlet and the outlet of the pump are connected to the atmosphere, and the pump operates continuously for 7*2 4 hours without stopping; Motor lifetime: The motors run continuously for 7*2 4 hours without load under good ventilation and heat dissipation conditions | ||
Working Condition | |||
Operating temperature | Permissible ambient temperature is 0~50 degrees, it is not suitable to be exposed to the sun, and it should work in a clean and ventilated environment | ||
Medium | Permissible temperature of the medium is 0~40 degrees, the transferring gas is allowed to be rich in water vapor, but cannot contain solid particles | ||
Wetted materials | The ES material combination offers good resistance to alcohols, acids, alkalis, ozone, etc. (excluding concentrated strong acids, esters, benzene, gasoline, etc.). | ||
Applications
- Gas sampling
- Medical equipment
- Analytical instruments
- Environmental online monitoring
- Pneumatic automation
Downloads
D28 Positive Negative Pressure Diaphragm Pump
D28 Speed-Adjustable Positive & Negative Pressure Diaphragm Pump
Product SKU: D28
Product Brand: Hilintec
Product Currency: USD
Price Valid Until: 2026-02-04
Product In-Stock: InStock
Editor's Rating:
4.99
4.99
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