The high quality one can be used kill
Caligus and sea lice, but no harm for Salmon and water, can used in fresh water
and sea water. The low quality one are harm for Salmon, only used to kill fly,
ants, cockroach and so on.
The application rate for this use is 0.1 to 0.2 mg/liter as a bath treatment.
The product should be keeped in well-ventilated place and free from exposure on sunshine & raining.
Animal Health,Azamethiphos For Slamon Health,Azamethiphos To Control Parasites,New Organophosphorus Pesticides Azamethiphos NINGBO LUCKY CHEMICAL INDUSTRY CO. LTD , https://www.cnluckychemical.com
**Double-Acting Relief Valves Compact Hydraulic Hollow Plunger Cylinder**
**Model NO.:** FY-RRH
**Double-Acting Cylinder Type:** Adjustable Cushioning Cylinder
**Combination Cylinder Type:** Pressurized Cylinder
**Color:** Customized as per Customer Requests
**Centre Hole Diameter:** 33.3–79.2 mm
**Capacity:** 30–150 ton
**Closed Height:** 165–460 mm
**Shaft Diameter:** 88.9–190.5 mm
**Weight:** 22–111 kg
**Working Pressure:** 700 bar
**Trademark:** FEIYAO
**Transport Package:** Wooden Crate
**Specification:** 50,000 pieces per year
**Origin:** China
**HS Code:** 8412210000
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### **Features:**
1. The hollow plunger design allows for both pulling and pushing forces.
2. Integrated relief valves protect the system from overpressure damage.
3. Baked enamel finish enhances corrosion resistance.
4. Collar threads allow for easy fixturing (excluding RRH-1001 and RRH-1508).
5. Double-acting mechanism enables fast hydraulic retraction.
6. Nickel-plated floating center tube improves product durability.
7. Plunger wiper minimizes contamination, extending cylinder lifespan.
8. CR 400 coupler and dustcap included with all models.
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### **Applications:**
These cylinders are widely used in industrial settings such as steel plants, cement industries, chemical and refinery operations, bridge construction, railway maintenance, and more. Their robust design and high performance make them ideal for heavy-duty applications.
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### **About FEIYAO:**
Established in 1978, Jiangsu Feiyao Machinery Manufacturing Factory is a leading manufacturer of hydraulic tools in China. We specialize in products like PLC lifting systems, hydraulic cylinders, torque wrenches, nut splitters, flange spreaders, gear pullers, hydraulic pumps, and accessories.
Our products are exported to Europe, Southeast Asia, and the Middle East, and have earned widespread recognition and trust from our customers. With well-equipped facilities and strict quality control, we meet international standards including CE and ISO 9001.
We welcome all overseas clients to contact us for business cooperation or any inquiries. Whether by phone, email, or fax, we are always ready to start a successful partnership.
For more information, visit our website: [www.fyhydraulic.cn](http://www.fyhydraulic.cn)
As a professional manufacturer, we offer competitive pricing and excellent after-sales service. If you have any questions about our products, feel free to reach out—we will do our best to assist you.
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### **Parameter Information:**
| Model | Pressure @ 700 bar (ton) | Stroke (mm) | Push Capacity (ton) | Pull Capacity (ton) | Effective Area (cm²) | Oil Capacity (cm³) | Closed Height A (mm) | Extending Height B (mm) | Outer Diameter D (mm) | Central Hole Diameter Y (mm) | Weight (kg) |
|---------------|--------------------------|-------------|---------------------|---------------------|----------------------|--------------------|-----------------------|---------------------------|------------------------|-------------------------------|-------------|
| FY-RRH-307 | 30 (326) | 178 | 30 | 23.0 | 46.6 | 30.4 | 829 | 541 | 330 | 508 | 114 | 33.3 | 22 |
| FY-RRH-3010 | 30 (326) | 257 | 30 | 23.0 | 46.6 | 30.4 | 1202 | 781 | 432 | 689 | 114 | 33.3 | 27 |
| FY-RRH-603 | 60 (576) | 89 | 60 | 41.8 | 82.2 | 54.0 | 733 | 481 | 248 | 337 | 159 | 53.8 | 28 |
| FY-RRH-606 | 60 (576) | 165 | 60 | 41.8 | 82.2 | 54.0 | 1366 | 891 | 324 | 489 | 159 | 53.8 | 35 |
| FY-RRH-6010 | 60 (576) | 257 | 60 | 41.8 | 82.2 | 54.0 | 2115 | 1388 | 438 | 695 | 159 | 53.8 | 46 |
| FY-RRH-1001 | 100 (931) | 38 | 100 | 67.7 | 133.1 | 87.4 | 505 | 332 | 165 | 203 | 213 | 79.2 | 39 |
| FY-RRH-1003 | 100 (931) | 76 | 100 | 67.7 | 133.1 | 87.4 | 1011 | 664 | 254 | 330 | 213 | 79.2 | 61 |
| FY-RRH-1006 | 100 (931) | 152 | 100 | 67.7 | 133.1 | 87.4 | 2035 | 1328 | 342 | 495 | 213 | 79.2 | 79 |
| FY-RRH-10010 | 100 (931) | 257 | 100 | 67.7 | 133.1 | 87.4 | 3420 | 2246 | 460 | 718 | 213 | 79.2 | 107 |
| FY-RRH-1508 | 150 (1333.3) | 203 | 150 | 76.0 | 204.1 | 102.6 | 4144 | 2083 | 349 | 552 | 248 | 79.2 | 111 |
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### **Product Images:**
[Image 1](http://i.bosscdn.com/uploads/5a/7f/93/ea26906943ec25fb4352c8681d.jpg)
[Image 2](http://i.bosscdn.com/uploads/34/dc/f2/aff782c72210a86551f1496b91.jpg)
[Image 3](http://i.bosscdn.com/uploads/fe/c4/9a/80ea2eaa5a20a1009b3362c719.jpg)
[Image 4](http://i.bosscdn.com/uploads/8e/c6/c3/fedc849effc096d3dc49b2d119.jpg)
[Image 5](http://i.bosscdn.com/uploads/35/9f/6c/e7d684c78fb7169b87690bcde4.jpg)
[Image 6](http://i.bosscdn.com/uploads/85/99/2a/5faa0264b8f47cf3e79d6d58d8.jpg)
Let us know if you need further details or assistance. We look forward to working with you!