HONGSEN KM Series Diaphragm Hand Valves
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HONGSEN KM Series Diaphragm Hand Valves
Product Description
The HONGSEN KM Series comprises manually operated diaphragm stop valves designed for one-way flow control in refrigeration and air-conditioning systems.
These hand valves can be installed in liquid, suction and hot-gas lines used in refrigeration equipment, cold-storage systems and air-conditioning units.
The series is available with SAE flare connections from 1/4 inch to 3/4 inch and ODF solder connections from 1/4 inch to 7/8 inch. Each valve is provided with a mounting hole for installation on an equipment or instrument panel.
Key Features
- Manually operated diaphragm stop valve
- Designed for one-way flow control
- Suitable for liquid, suction and hot-gas lines
- SAE flare and ODF solder connections available
- Connection sizes from 1/4 inch to 7/8 inch
- ODF models supplied with copper tube connections
- Integrated mounting hole for panel installation
- Suitable for refrigeration, cold-storage and air-conditioning systems
Available Variants
| Variant | Official Model | Connection | Connection Type | Kv |
|---|---|---|---|---|
| KM-1/4 SAE | KM-1/4 | 1/4 in | SAE Flare | 0.28 m³/h |
| KM-3/8 SAE | KM-3/8 | 3/8 in | SAE Flare | 0.30 m³/h |
| KM-1/2 SAE | KM-1/2 | 1/2 in | SAE Flare | 1.30 m³/h |
| KM-5/8 SAE | KM-5/8 | 5/8 in | SAE Flare | 1.80 m³/h |
| KM-3/4 SAE | KM-3/4 | 3/4 in | SAE Flare | 3.65 m³/h |
| KM-1/4 ODF | KM-1/4 | 1/4 in | ODF Solder | 0.28 m³/h |
| KM-3/8 ODF | KM-3/8 | 3/8 in | ODF Solder | 0.30 m³/h |
| KM-1/2 ODF | KM-1/2 | 1/2 in | ODF Solder | 1.30 m³/h |
| KM-5/8 ODF | KM-5/8 | 5/8 in | ODF Solder | 1.80 m³/h |
| KM-3/4 ODF | KM-3/4 | 3/4 in | ODF Solder | 3.65 m³/h |
| KM-7/8 ODF | KM-7/8 | 7/8 in | ODF Solder | 3.65 m³/h |
Connection Information
SAE Flare Models
| Connection | Thread |
|---|---|
| 1/4 in SAE | 7/16-20 UNF |
| 3/8 in SAE | 5/8-18 UNF |
| 1/2 in SAE | 3/4-16 UNF |
| 5/8 in SAE | 7/8-14 UNF |
| 3/4 in SAE | 1-1/16-14 UNS |
ODF Solder Models
| Nominal Connection | Tube Outside Diameter |
|---|---|
| 1/4 in ODF | 6.5 mm |
| 3/8 in ODF | 9.7 mm |
| 1/2 in ODF | 12.8 mm |
| 5/8 in ODF | 16.1 mm |
| 3/4 in ODF | 19.1 mm |
| 7/8 in ODF | 22.3 mm |
Main Components
The official product structure identifies the following components:
- Screw
- Hand wheel
- Valve stem
- Valve bonnet
- Copper sheet
- Valve element
- Diaphragm
- Spring
- Valve body
- Dust cap
- Connection nut
Applications
- Cold-room refrigeration systems
- Refrigeration liquid lines
- Compressor suction lines
- Hot-gas piping
- Commercial refrigeration equipment
- Refrigerated storage systems
- Air-conditioning equipment
How to Select
Please confirm the following information before ordering:
- Required connection size
- SAE flare or ODF solder connection
- Refrigerant line application
- Required flow coefficient
- Installation space
- Panel-mounting requirements
| Model |
KM-1/4 – 1/4 SAE, KM-3/8 – 3/8 SAE, KM-1/2 – 1/2 SAE, KM-5/8 – 5/8 SAE, KM-3/4 – 3/4 SAE, KM-1/4 – 1/4 ODF, KM-3/8 – 3/8 ODF, KM-1/2 – 1/2 ODF, KM-5/8 – 5/8 ODF, KM-3/4 – 3/4 ODF, KM-7/8 – 7/8 ODF |
|---|