ENMG / MECHANICAL LEVEL-CONTROL VALVES
ELSV
Mechanical automatic water-fill valves
Float-operated valves for automatic replenishment and full-level shutoff in open water tanks. Operation uses water pressure and buoyancy without an electrical supply.
Request a quote ↗TECHNICAL DATA / ELSV
Specifications & selection.
- PA66 standard body with304 stainless-steel fasteners.
- Top-inlet and side-inlet models.
- Standard and high-flow DN25 selections.
| Model | Inlet | Nominal connection | L × H mm | Approx. mass |
|---|---|---|---|---|
| ELSV-N11-1/2 | Top | DN15 / ½ in | 69 ×125 | 90 g |
| ELSV-N21-1/2 | Side | DN15 / ½ in | 102 ×86 | 90 g |
| ELSV-N11-3/4 | Top | DN20 / ¾ in | 70 ×125 | 95 g |
| ELSV-N21-3/4 | Side | DN20 / ¾ in | 103 ×89 | 95 g |
| ELSV-N11-1/1 | Top | DN25 /1 in | 70 ×125 | 100 g |
| ELSV-N21-1/1 | Side | DN25 /1 in | 103 ×91 | 100 g |
| ELSV-N11-1/1-H | Top | DN25 high-flow | 70 ×159.1 | 130 g |
| ELSV-N21-1/1-H | Side | DN25 high-flow | 140.5 ×117 | 130 g |
| Parameter | Published information |
|---|---|
| Liquid | Clean water |
| Temperature | 0–70 °C; prevent freezing |
| Pressure notation | Source says0.2–10 “kg” and minimum2 m head; pressure unit requires confirmation |
| Mounting | Keep float vertically downward with unobstructed travel; follow inlet arrow |
| Filter | 304 stainless-steel inlet mesh supplied |
| Larger sizes | DN32 / DN40 / DN50 by confirmed order |
| Custom materials | 304 /316 stainless steel or titanium, subject to compatibility review |
| Dimensions | Source approximate values, ±2 mm; confirm installation envelope |
Selection & installation notes
- The source pressure unit is incomplete. If intended as kgf/cm²,0.2–10 corresponds to approximately0.020–0.981 MPa; this conversion is not confirmation of the valve pressure rating. Obtain the approved inlet-pressure range before installation.
- The tank is atmospheric; that does not mean the inlet piping is unpressurized. Confirm pressure transients, connection thread standard and sealing method.
- No verified flow curve or Kv value is provided. The source’s30–50% high-flow improvement is not a guaranteed flow at an unspecified pressure.
- Flush the pipe, fit the inlet filter and clean the float/pilot passages periodically. Keep clearance around the float and provide appropriate overflow provision for the tank.
- The standard PA66 version is for clean water; do not infer drinking-water approval or chemical compatibility from company management-system certifications.
Based on the official Chinese product page and selection charts ↗. Checked 2026-09-15. Confirm the current specification for the exact model when ordering.
TECHNICAL RESOURCES
Plan your integration.
ENMG control components — English product-family brochure.
This is a product-family brochure. Request a model-specific datasheet and installation drawing with your inquiry.