Horizontal Inline Pump
Horizontal Inline Centrifugal Pump
Direct-coupled, single-stage centrifugal pumps engineered for commercial HVAC, municipal water circulation, and pressure boosting systems. Designed with inline suction and discharge connections to simplify piping layouts and eliminate dedicated concrete housekeeping pads.
Technical Specifications & Performance Range
|
Parameter |
Standard Range / Metric |
Standard Range / Imperial |
|
Flow Rate (Q) |
5 to 500 m3/h |
22 to 2,200 GPM |
|
Total Head (H) |
10 to 120 meters |
33 to 394 feet |
|
Port Size |
DN50 to DN200 |
2 inches to 8 inches |
|
Max Working Pressure |
1.6 MPa / 2.5 MPa |
175 PSI / 250 PSI |
|
Fluid Temperature Range |
-15°C to +120°C |
5°F to 248°F |
|
Motor Compatibility |
IEC 80-315 / NEMA 143T-444T |
TEFC / IP55 (IE3/IE4 optional) |
Engineering & Construction Materials
Material selection directly affects corrosion resistance, pressure ratings, and lifecycle maintenance intervals. Standard and alternative metallurgy configurations match specific fluid properties:
Pump Casing: Ductile Iron (ASTM A536 65-45-12) standard; optional Cast Stainless Steel (CF8 / CF8M) for aggressive or treated water.
Impeller: Closed, dynamically balanced Bronze (ASTM B584 C83600) or 316 Stainless Steel. Balanced to ISO 1940 Grade 6.3 to minimize hydraulic vibration.
Shaft: High-strength 420 Stainless Steel (or 316 Stainless Steel for corrosive environments), precision-ground to maintain radial runout under 0.05 mm.
Mechanical Seal: Single internal mechanical seal featuring Silicon Carbide vs. Carbon faces, with Viton (FKM) elastomers. Rated for operating temperatures up to 120°C.
Structural Advantages for System Integrators
In-Line Flange Configuration: Suction and discharge flanges share a common centerline. The pump installs directly into the pipeline like a standard check valve, eliminating pipe elbows, reducers, and independent structural support foundations.
Back-Pull-Out Architecture: Maintenance personnel can service the mechanical seal, shaft sleeve, and impeller without disconnecting the suction and discharge piping or lifting the main motor.
Rigid Motor-Pump Alignment: Precision-machined register fits between the motor bracket and pump casing maintain shaft concentricity, preventing angular misalignment and extending bearing life.
Manufacturing, Quality Control & Compliance
Every pump batch undergoes strict factory verification and meets international regulatory compliance before dispatch:
Machining & Tolerances: CNC horizontal boring and milling centers maintain critical dimensional tolerances within +/-0.02 mm for casing mating surfaces.
Hydrostatic Pressure Testing: Each completed casing is hydro-tested at 1.5 x maximum working pressure for 10 minutes to verify structural integrity and zero leakage.
Performance Testing: Completed pump units undergo hydraulic performance testing in accordance with ISO 9906 Grade 2B standards (measuring flow, head, power consumption, and NPSH). Test curves are supplied upon request.
Global Regulatory Compliance & Warranty: Manufactured under an ISO 9001 quality management system. Product configurations comply with CE directives for European markets, with optional NSF/ANSI 61 certification available for potable water applications. Backed by a standard 18-month factory warranty from the date of shipment or 12-month from installation.
Application Matrix
|
Application Sector |
Specific Duty |
Recommended Material Spec |
|
Commercial HVAC |
Chilled water and condenser water loops |
Ductile Iron Casing / Bronze Impeller |
|
Municipal Water |
Booster station pressure maintenance |
Ductile Iron Casing / 316SS Impeller |
|
District Energy |
Secondary hot water distribution networks |
Ductile Iron Casing / Silicon Carbide Seal |
|
Light Industry |
Closed-loop industrial cooling circuits |
304/316 Stainless Steel Wetted Parts |
Frequently Asked Questions
Q: How does an inline pump reduce mechanical room installation costs?
A: An inline pump features coaxial suction and discharge connections. It mounts directly into existing piping runs, removing the need for concrete inertia bases, housekeeping pads, and complicated pipe expansion loops required by traditional end-suction horizontal split-case pumps.
Q: Can these pumps be installed in vertical pipe runs, or must they be horizontal?
A: They can be installed in both horizontal and vertical piping configurations, provided the motor is supported adequately according to the manufacturer's weight-load guidelines. For motors exceeding 15 kW (20 HP), auxiliary floor support brackets under the motor base are required.
Q: What is the procedure for replacing the mechanical seal?
A: Close isolation valves upstream and downstream of the pump, drain the internal casing fluid, and disconnect the electrical power supply. Remove the coupling guard and motor bolts. The rotating assembly (motor, bracket, and impeller) pulls back directly through the back-pull-out clearance, granting immediate access to the mechanical seal without disturbing pipe flanges.
Q: Are hydraulic performance curves provided for engineering submittal reviews?
A: Yes. Factory test reports and computer-generated performance curves (showing Head, Flow, Efficiency, and NPSHr) are generated for every customized or bulk order in compliance with ISO 9906 requirements.
Q: What flange standards are available for international projects?
A: Standard production models are manufactured with PN16 / PN25 dimensions conforming to ISO 7005-2 / EN 1092-2. ANSI B16.5 Class 150 drilling patterns are available for North American market specifications.
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