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The HL is Hongjiu’s horizontal stainless steel horizontal multistage pump for domestic and light commercial clean water applications. All wetted components are AISI 304 stainless steel — zero rust contamination, fully potable-water compliant. Six frame sizes (HL2–HL20) cover 0–28 m³/h and 5–65 m head; three variants address every installation environment including outdoor and weatherproof sites.
| Parameter | Value |
|---|---|
| Flow Rate | 0 – 28 m³/h |
| Head | 5 – 65 m |
| Frame Sizes | HL2, HL4, HL8, HL12, HL16, HL20 |
| Working Pressure | 1.0 MPa (10 bar) |
| Temperature Range | 0°C to +90°C |
| Wetted Materials | AISI 304 Stainless Steel |
| Mechanical Seal | Silicon carbide / graphite |
| Motor Protection | IPX4, Class F |
| Voltage | Single-phase 220V / Three-phase 380V |
| pH Range | 6.5 – 8.5 |
| Model | Configuration | Best For |
|---|---|---|
| HL Standard | Fixed-speed, 220V or 380V | Constant-duty water transfer, simple circulation |
| HLE VFD | Built-in VFD, constant-pressure PID | Building supply, villa boosting, pressure stabilization |
| HLES Rain-Proof | VFD pump + stainless steel weatherproof enclosure | Outdoor installation, agricultural, remote sites |
HL Standard → — Fixed-speed reliability at the lowest cost for constant-duty clean water applications.
HLE VFD → — 8 built-in protection functions (dry-run, over-current, phase-loss, etc.) for automatic constant-pressure operation.
HLES Rain-Proof → — Complete outdoor solution in a stainless steel weatherproof cabinet with anti-theft protection; no additional electrical cabinet needed.
Villa and residential water supply · High-rise building boosting · Hot water circulation (HB variant to 100°C) · Agricultural irrigation with outdoor exposure · Spa and bath facilities requiring quiet operation
HL vs HK(L) — which to choose? HL is horizontal, max 10 bar, for domestic and light commercial use. HK(L) is vertical, up to 16 bar, for industrial applications including water treatment and boiler feed.
Can HL be installed outdoors? Yes — the HLES Rain-Proof variant includes a stainless steel weatherproof enclosure designed for outdoor installation.
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