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Compression Condensing Unit
Condenser
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• SGN/SGS type sight glasses are installed in the liquid lines of refrigeration and air conditioning systems to indicate refrigerant flow status, moisture content in the refrigerant, and lubricating oil flow in the oil return lines of oil separators.
• SGN/SGS type sight glasses are equipped with a moisture indicator that shows the moisture level in the refrigerant by changing color.
• SGR type sight glasses are used to monitor the refrigerant level in receivers or the lubricating oil level in compressor crankcases.
• Both SGN and SGR type sight glasses use modified PTFE sealing material, which is suitable for various refrigerants and refrigeration oils and provides excellent sealing performance.
• SGN/SGR type sight glasses adopt an explosion-proof crimped structure, with a clear and safe viewing window.
• SGS type sight glasses feature a traditional independent sight glass body structure with glass fusion bonding and O-ring sealing.
Product Model:
| Solder End Model | Specification | Thread End Model | Specification |
|---|---|---|---|
| SGN-1/4 ODF | 1/4 (Φ6) | SGS-1/4 SAE | 1/4 (Φ6) |
| SGN-3/8 ODF | 3/8 (Φ10) | SGS-3/8 SAE | 3/8 (Φ10) |
| SGN-1/2 ODF | 1/2 (Φ12) | SGS-1/2 SAE | 1/2 (Φ12) |
| SGN-5/8 ODF | 5/8 (Φ16) | SGS-5/8 SAE | 5/8 (Φ16) |
| SGN-3/4 ODF | 3/4 (Φ19) | SGS-3/4 SAE | 3/4 (Φ19) |
| SGN-7/8 ODF | 7/8 (Φ22) | SGR-3/4 NPT | 3/4 NPT |
| — | — | SGR-G3/4 | G3/4 |
Technical Parameters:
| Item | Specification |
|---|---|
| Applicable Refrigerants | HCFC and HFC |
| Applicable Medium Temperature | -40°C ~ +80°C |
| Max. Working Pressure | 4.5 MPa |
| Max. Burst Pressure | 6.8 MPa |
| Annual Refrigerant Leakage | ≤2g R22/a |
Note: The allowable moisture content for hermetic compressors is generally between 30–75 ppm, while it is slightly higher for other compressors. To ensure effective system protection, the indicator must be carefully monitored. If the color turns yellow, the drier must be replaced.
Relationship Between Moisture Content and Color:
| Refrigerant | 25°C | 43°C | ||||
|---|---|---|---|---|---|---|
| Green
(< ppm) |
Intermediate Color
(ppm range) |
Yellow
(> ppm) |
Green
(< ppm) |
Intermediate Color
(ppm range) |
Yellow
(> ppm) |
|
| R22/R502 | <30 | 30~120 | >120 | <50 | 50~200 | >200 |
| HFC-134a | <30 | 30~100 | >100 | <45 | 45~170 | >170 |
| R404a | <20 | 20~70 | >70 | <25 | 25~100 | >100 |
| R407c | <30 | 30~140 | >140 | <60 | 60~225 | >225 |
| R507 | <15 | 15~60 | >60 | <30 | 30~110 | >110 |
Structure:
| Model | Connection | A | B | ΦC | ΦD | E | F | L | S | Thread M | Weight (g) – SGN | Weight (g) – SGS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SGN/SGS-1/4 | ODF
SAE |
9.5 | 14.5 | 28 | 6.5 | 7 | 27 | 102 | 14 | 7/16-20UNF | 105 | 125 |
| SGN/SGS-3/8 | ODF
SAE |
12.5 | 16.5 | 28 | 10.1
— |
8 | 36
14 |
119
64 |
19 | 5/8-18UNF | 145
110 |
145
155 |
| SGN/SGS-1/2 | ODF
SAE |
13 | 18 | 31.5 | 12.8
— |
10 | 46
19 |
146
78 |
22 | 3/4-16UNF | 170
240 |
150
210 |
| SGN/SGS-5/8 | ODF
SAE |
15 | 20 | 31.5 | 16.1
— |
14 | 46
20 |
152
78 |
24 | 7/8-14UNF | 190
350 |
220
300 |
| SGN/SGS-3/4 | ODF
SAE |
16.5 | 21.5 | 31.5 | 19.1
— |
16 | 51
23 |
167
94 |
27 | 1-1/16-14UNS | 270
545 |
230
440 |
| SGN/SGS-7/8 | ODF
SAE |
— | — | — | 22.3
— |
17 | 54 | 173 | — | — | 315 | 290 |
| SGR-3/4NPT | NPT | 10.5 | 13 | — | — | — | — | — | 32 | 3/4NPT | 90 | — |
| SGR-G3/4 | G | 10.5 | 13 | — | — | — | — | — | 32 | G3/4 | 70 | — |
Recommended Products
Technological Leadership
Continuous research and development, with an experienced engineering team and advanced production processes
Quality Assurance
A comprehensive quality control system ensures that every piece of equipment is efficient, stable, and reliable.
Energy-Efficient
It adopts efficient compression and optimized heat exchange to achieve low energy consumption operation.
FAQ
Frequently Asked Questions
Wonder if you accept small orders?
Do not worry. Feel free to contact us .in order to get more orders and give our clients more convener , we accept small order.
Can you send products to my country?
Sure, we can. If you do not have your own ship forwarder, we can help you.
Can you do OEM for me?
We accept all OEM orders,just contact us and give me your design. we will offer you a reasonable price for you ASAP.
Do you offer customized service?
Yes, we provide customized service, including but not limited to product color, size, packaging and logo printing. Please contact our customer service team to discuss your specific needs and we will do our best to meet your requirements.
What's your payment terms ?
By T/T,LC AT SIGHT,30% deposit in advance, balance 70% before shipment.
When can I get the quotation ?
We usually quote you within 24 hours after we get your inquiry. If you are very urgent to get the quotation. Please call us or tell us in your mail, so that we could regard your inquiry priority.