Negative pressure rubber connector is a expansion joint to resist suction, when the external pressure is greater than the internal pressure (expansion joint head/soft joint rubber shock absorber), laryngeal:
1. Negative pressure resistant expansion joint rubber made of different materials can be made resist to Acid and alkali, corrosion, oil, heat and a variety of media and the environment.
2. Expansion joint material is a polar rubber, expansion joint is sealing well and light weight, expansion joint installation is Convenient. It has long service life it shall avoid contact with sharp metal instruments, so as not to puncture the rubber ball joint.
3. Expansion joint installed overhead can use elastic support, expansion joint installation shall be bolted by diagonal Method of tightening.
4. Expansion joint used on high pressure pipe line shall be connected with limit bolts at both ends of the flange.
5. Expansion joint flange connection adopt the GB4216.3-4216.5 standard, otherwise shall be specified separately. The working pressure of the productGrade 0.6Mpa,1 Mpa,1.6 Mpa,2.5 Mpa. The use of negative pressure ball can be used in vacuum to avoid the sphere deformation and damage. |
 |
 |
|
Inner and outer lining
|
NR, CR, IIR, NBR, FKM, EPDM, PTFE
|
| Main skeleton |
Nylon cord fabric
|
| Pressurizing ring |
Stranded copper wire
|
| Flange |
Casting and forged carbon steels (Q235)
Stainless steel (201, 304, 316, 321)
Plastic (CPVC, PVDF, PPH, UPVC, RPP)
|
Ⅰ Business area: fluid control products, technology and environmental protection products.
Ⅱ Advanced CNC machining centers, professional process cells, welding equipment, automatic assembly lines and coating.
Ⅲ China's standard reference unit, to participate in the development of relevant valve industry standards.
Ⅳ We have set up a research and development center in Houston, Texas, in the United States.
Ⅴ Product Standard: GB, German Standard, American Standard, TUV CE, ISO 9001, ADWO-2000, TS, PED, WRC WRAS, KTW, API 6D, API609.
VI Main production: butterfly valve, ball valve, gate valve, check valve, globe valves, pipe fittings, manual / pneumatic / electric actuator, valve parts.
FAQ
Q: If I need quotation, what informations do we need?
A: Valves' materials, Temperature, Pressure, Medium, Appllication System.
Q: Can you provide actuators, what you have?
A: Pneumatic, Electric, Hrdraulic, Solenoid Valves. RKSfluid actuators adopt USA technology. Which you need, just tell us.
Q: What's your productive capacity?
A: RKSfluid has four plants that can provide the products you need.
Q: Production lead time
A: Normal products have stock in 2~5 working days. Customized base on your need.
Q: MOQ
A: 1pc for all products.
Q: How about the quality assurance?
A: 100% quality test before delivery, 2 years warranty. Ensure your system working safety.
We got TUV, API, WRAS, CE, ISO certification.
Standard conform to DIN, ASME, BS EN, JIS, API, AWWA.
Q: How could you provide quality service to our customers?
A: RKSfluid own 27 years experiences and more than 70 R&D engineers provide technical support, model selection and installation guidance for you.
+86 138 8989 6699 
