We are committed to becoming a trusted rotary vein pump, electric crankcase vacuum pump, roots blower specs solution provider. We will make timely and reasonable adjustments to the competitive strategy according to the implementation progress and evaluation results to ensure the complete realization of the entire enterprise goal. The success of our company is the concentrated embodiment of our advanced business process and excellent management ideas, the core strength of enterprise competition, and the important embodiment of management level and staff quality. We care about every steps of our services, from factory selection, product development & design, price negotiation, inspection, shipping to aftermarket. We invites you and your enterprise to thrive together with us and share a bright future in global market.
Three lobed low noise roots blower from Nantong Rongheng, we are professional roots blower manufacturer since 1993.
Roots type blower are widely used in water treatment and gas delivery sector.

| Model | Speed(n) | △P | flow(Q) | shaft power | motor | weight | ||
| r/min | kPa | mmH2O | m3/min | kW | model | kW | kg | |
| RH20053 | 980 | 9.8 | 1000 | 28.7 | 8.2 | Y2-160L-6 | 11 | 1117 |
| 19.6 | 2000 | 27.7 | 12.6 | Y2-180L-6 | 15 | 1170 | ||
| 29.4 | 3000 | 26.9 | 17.0 | Y2-200L1-6 | 18.5 | 1190 | ||
| 39.2 | 4000 | 26.3 | 21.7 | Y2-225M-6 | 30 | 1270 | ||
| 49 | 5000 | 25.7 | 26.4 | Y2-225M-6 | 30 | 1270 | ||
| 58.8 | 6000 | 25.1 | 32.2 | Y2-250M-6 | 37 | 1470 | ||
| 68.6 | 7000 | 24.5 | 38.0 | Y2-280S-6 | 45 | 1646 | ||
| 78.4 | 8000 | 24.1 | 43.3 | Y2-280M-6 | 55 | 1666 | ||
| 88.2 | 9000 | 23.3 | 48.5 | Y2-280M-6 | 55 | 1666 | ||
| 98 | 10000 | 22.5 | 53.7 | Y2-315S-6 | 75 | 1829 | ||
| 1100 | 9.8 | 1000 | 32.7 | 9.3 | Y2-160M-4 | 11 | 1127 | |
| 19.6 | 2000 | 31.7 | 14.4 | Y2-180M-4 | 18.5 | 1226 | ||
| 29.4 | 3000 | 30.9 | 19.8 | Y2-200L-4 | 30 | 1300 | ||
| 39.2 | 4000 | 30.3 | 25.2 | Y2-200L-4 | 30 | 1300 | ||
| 49 | 5000 | 29.7 | 30.7 | Y2-225S-4 | 37 | 1360 | ||
| 58.8 | 6000 | 29.1 | 36.2 | Y2-225M-4 | 45 | 1400 | ||
| 68.6 | 7000 | 28.5 | 41.8 | Y2-250M-4 | 55 | 1469 | ||
| 78.4 | 8000 | 27.9 | 47.6 | Y2-250M-4 | 55 | 1469 | ||
| 1200 | 9.8 | 1000 | 36.1 | 10.4 | Y2-160L-4 | 15 | 1197 | |
| 19.6 | 2000 | 35.1 | 16.2 | Y2-180M-4 | 18.5 | 1229 | ||
| 29.4 | 3000 | 34.3 | 22.2 | Y2-200L-4 | 30 | 1303 | ||
| 39.2 | 4000 | 33.7 | 28.3 | Y2-225S-4 | 37 | 1363 | ||
| 49 | 5000 | 33.1 | 34.5 | Y2-225M-4 | 45 | 1403 | ||
| 58.8 | 6000 | 32.5 | 40.7 | Y2-225M-4 | 45 | 1403 | ||
| 68.6 | 7000 | 31.9 | 47.0 | Y2-250M-4 | 55 | 1472 | ||
| 78.4 | 8000 | 31.3 | 53.5 | Y2-280S-4 | 75 | 1607 | ||
| 1310 | 9.8 | 1000 | 39.7 | 11.2 | Y2-160M-4 | 15 | 1200 | |
| 19.6 | 2000 | 38.7 | 17.8 | Y2-180L-4 | 22 | 1250 | ||
| 29.4 | 3000 | 37.9 | 24.5 | Y2-200L-4 | 30 | 1305 | ||
| 39.2 | 4000 | 37.3 | 31.3 | Y2-225S-4 | 37 | 1366 | ||
| 49 | 5000 | 36.7 | 38.3 | Y2-225M-4 | 45 | 1405 | ||
| 58.8 | 6000 | 36.1 | 45.5 | Y2-250M-4 | 55 | 1475 | ||
| 68.6 | 7000 | 35.5 | 52.7 | Y2-280S-4 | 75 | 1610 | ||
| 78.4 | 8000 | 34.9 | 60.4 | Y2-280S-4 | 75 | 1610 | ||
| 1450 | 9.8 | 1000 | 44.6 | 12.1 | Y2-160L-4 | 15 | 1215 | |
| 19.6 | 2000 | 43.6 | 20.0 | Y2-200L-4 | 30 | 1300 | ||
| 29.4 | 3000 | 42.8 | 27.5 | Y2-225S-4 | 37 | 1355 | ||
| 39.2 | 4000 | 42.2 | 35.6 | Y2-225M-4 | 45 | 1400 | ||
| 49 | 5000 | 41.6 | 43.4 | Y2-250M-4 | 55 | 1469 | ||
| 58.8 | 6000 | 41.0 | 51.4 | Y2-280S-4 | 75 | 1606 | ||
| 68.6 | 7000 | 40.5 | 59.5 | Y2-280S-4 | 75 | 1606 | ||
| 78.4 | 8000 | 40.0 | 67.7 | Y2-280S-4 | 75 | 1606 | ||
| 88.2 | 9000 | 39.2 | 75.9 | Y2-280M-4 | 90 | 1711 | ||
| 98 | 10000 | 38.0 | 85.0 | Y2-315S-4 | 110 | 2040 | ||
| Model | Speed(n) | △P | flow(Q) | shaft power | motor | weight | ||
| r/min | kPa | mmH2O | m3/min | kW | model | kW | kg | |
| RH20053 | 980 | 9.8 | 1000 | 28.7 | 8.2 | Y2-160L-6 | 11 | 1117 |
| 19.6 | 2000 | 27.7 | 12.6 | Y2-180L-6 | 15 | 1170 | ||
| 29.4 | 3000 | 26.9 | 17.0 | Y2-200L1-6 | 18.5 | 1190 | ||
| 39.2 | 4000 | 26.3 | 21.7 | Y2-225M-6 | 30 | 1270 | ||
| 49 | 5000 | 25.7 | 26.4 | Y2-225M-6 | 30 | 1270 | ||
| 58.8 | 6000 | 25.1 | 32.2 | Y2-250M-6 | 37 | 1470 | ||
| 68.6 | 7000 | 24.5 | 38.0 | Y2-280S-6 | 45 | 1646 | ||
| 78.4 | 8000 | 24.1 | 43.3 | Y2-280M-6 | 55 | 1666 | ||
| 88.2 | 9000 | 23.3 | 48.5 | Y2-280M-6 | 55 | 1666 | ||
| 98 | 10000 | 22.5 | 53.7 | Y2-315S-6 | 75 | 1829 | ||
| 1100 | 9.8 | 1000 | 32.7 | 9.3 | Y2-160M-4 | 11 | 1127 | |
| 19.6 | 2000 | 31.7 | 14.4 | Y2-180M-4 | 18.5 | 1226 | ||
| 29.4 | 3000 | 30.9 | 19.8 | Y2-200L-4 | 30 | 1300 | ||
| 39.2 | 4000 | 30.3 | 25.2 | Y2-200L-4 | 30 | 1300 | ||
| 49 | 5000 | 29.7 | 30.7 | Y2-225S-4 | 37 | 1360 | ||
| 58.8 | 6000 | 29.1 | 36.2 | Y2-225M-4 | 45 | 1400 | ||
| 68.6 | 7000 | 28.5 | 41.8 | Y2-250M-4 | 55 | 1469 | ||
| 78.4 | 8000 | 27.9 | 47.6 | Y2-250M-4 | 55 | 1469 | ||
| 1200 | 9.8 | 1000 | 36.1 | 10.4 | Y2-160L-4 | 15 | 1197 | |
| 19.6 | 2000 | 35.1 | 16.2 | Y2-180M-4 | 18.5 | 1229 | ||
| 29.4 | 3000 | 34.3 | 22.2 | Y2-200L-4 | 30 | 1303 | ||
| 39.2 | 4000 | 33.7 | 28.3 | Y2-225S-4 | 37 | 1363 | ||
| 49 | 5000 | 33.1 | 34.5 | Y2-225M-4 | 45 | 1403 | ||
| 58.8 | 6000 | 32.5 | 40.7 | Y2-225M-4 | 45 | 1403 | ||
| 68.6 | 7000 | 31.9 | 47.0 | Y2-250M-4 | 55 | 1472 | ||
| 78.4 | 8000 | 31.3 | 53.5 | Y2-280S-4 | 75 | 1607 | ||
| 1310 | 9.8 | 1000 | 39.7 | 11.2 | Y2-160M-4 | 15 | 1200 | |
| 19.6 | 2000 | 38.7 | 17.8 | Y2-180L-4 | 22 | 1250 | ||
| 29.4 | 3000 | 37.9 | 24.5 | Y2-200L-4 | 30 | 1305 | ||
| 39.2 | 4000 | 37.3 | 31.3 | Y2-225S-4 | 37 | 1366 | ||
| 49 | 5000 | 36.7 | 38.3 | Y2-225M-4 | 45 | 1405 | ||
| 58.8 | 6000 | 36.1 | 45.5 | Y2-250M-4 | 55 | 1475 | ||
| 68.6 | 7000 | 35.5 | 52.7 | Y2-280S-4 | 75 | 1610 | ||
| 78.4 | 8000 | 34.9 | 60.4 | Y2-280S-4 | 75 | 1610 | ||
| 1450 | 9.8 | 1000 | 44.6 | 12.1 | Y2-160L-4 | 15 | 1215 | |
| 19.6 | 2000 | 43.6 | 20.0 | Y2-200L-4 | 30 | 1300 | ||
| 29.4 | 3000 | 42.8 | 27.5 | Y2-225S-4 | 37 | 1355 | ||
| 39.2 | 4000 | 42.2 | 35.6 | Y2-225M-4 | 45 | 1400 | ||
| 49 | 5000 | 41.6 | 43.4 | Y2-250M-4 | 55 | 1469 | ||
| 58.8 | 6000 | 41.0 | 51.4 | Y2-280S-4 | 75 | 1606 | ||
| 68.6 | 7000 | 40.5 | 59.5 | Y2-280S-4 | 75 | 1606 | ||
| 78.4 | 8000 | 40.0 | 67.7 | Y2-280S-4 | 75 | 1606 | ||
| 88.2 | 9000 | 39.2 | 75.9 | Y2-280M-4 | 90 | 1711 | ||
| 98 | 10000 | 38.0 | 85.0 | Y2-315S-4 | 110 | 2040 | ||
In the face of the opportunities and challenges brought about by the fierce market competition, our just brand-new business model and high-level management mode will create our brand and make our Stainless Steel Pneumatic Diaphragm Pump Food Grade Vacuum Diaphragm Pump in an invincible position forever. Adhering to our moto of 'Excellent Quality, Continuous Development, Continuous Improvement and Customer Satisfaction', we strive to maintain long term partnerships with our customers. We also warmly welcome customers to visit our company and purchase our solutions.
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