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DN20 Vacuum Resistant Twin Sphere Union Rubber Joints

DN20 Vacuum Resistant Twin Sphere Union Rubber Joints

Twin Sphere Union Rubber Joints

NBR Threaded Expansion Joint

DN20 Threaded Expansion Joint

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Product Details
Rubber Material:
Union Material:
Iron,Stainless Steel
Union Standard:
Smoothbore Sphere
-20~110 ℃
Vacuum Ring:
Available On Request
Burst Pressure:
Medium Flexibility / Medium Pressure
Other Name:
Threaded Rubber Expansion Joints
Payment & Shipping Terms
Minimum Order Quantity
Packaging Details
Carton or Wooden
Product Description

Twin Sphere Union Rubber Joints With Root Rings and vacuum resistant


Threaded union rubber expansion joints are the choice when an economical threaded pipe connection is needed. The Threaded union rubber expansion joints is engineered to absorb thermal movement, offset and misalignment in piping systems. The Threaded union rubber expansion joints style is an excellent choice to absorb and isolate vibration. Use the Threaded union rubber expansion joints to protect your system from start-up forces as well as system surges. There is no need to worry about Electrolysis when using a Threaded union rubber expansion joints. Due to the design of the Threaded union rubber expansion joints having a rubber body it eliminates metal to metal contact stopping the electrolytic process.


EPDM Thread-Connection expansion joint for high vibration absorbing ability after surface and treatment and inspection of finished products.


Screw thread rubber joint is the soft joint of metal pipes, and consists of inner rubber, nylon cord fabric, outer rubber compound rubber ball and metal lap joint flanges. The product can endure high pressure, maintain good elasticity, have large displacement to balance pipe deviation, absorb vibration and make less noise and have easy installation, etc.

Screw thread rubber joint can be widely used in the pipe system of water supply, drainage, circulating water, HVAC, fire protection, paper making, pharmacy, petroleum chemical industry, ship piping system, water pump, compressor and fan etc. The normal type is used to transport air ranges from - 15 °C to 115 °C, compressed air, water, sea water, oil, acid and alkali etc. The special type is used to transport the media above ranges from - 30 °C to 250 °C above, oil or strong alkali, strong acid and solid material.


Screw thread rubber Flexible Expansion Joint , also known as flexible joint, rubber expansion joint, rubber flexible joint, pipe expansion joint, soft rubber joint etc.We introduce advanced technology from abroad, and combine it with Chinese production experience. In the manufacturing operation, the inner side endures high pressure; nylon cord fabrics and the inner rubber are better combined and can work under higher pressure than normal flexible rubber joint. Its characteristics are that the inner adhesive layer united perfectly, bright, clean and seamless; the tag adopts the vulcanization process, perfectly matches the product.


DN20 Vacuum Resistant Twin Sphere Union Rubber Joints 0

DN20 Vacuum Resistant Twin Sphere Union Rubber Joints 1

Threaded union rubber expansion joint Advantage:


A: 15 minutes zinc plating, high pressure resistance, high temperature resistance, oil resistance, wear resistance, corrosion resistance, acid and alkali resistance.

B: Connect with pump, valve, fire fighting equipment, pipe which vibrate big, pipe which hot and cold change frequently.

C: Natural rubber content of forty-seven percent, can continue to use for 15 years without aging.


Product Details


DN20 Vacuum Resistant Twin Sphere Union Rubber Joints 2



DN20 Vacuum Resistant Twin Sphere Union Rubber Joints 3

DN20 Vacuum Resistant Twin Sphere Union Rubber Joints 4


EPDM Thread-Connection expansion joint for high vibration absorbing ability can be customized DN15-DN80.

Rubber expansion joints are generally composed of smooth wave shape compensation element with rubber flange at both ends and metal flange. A loose sleeve structure is often used for metal flange.


DN20 Vacuum Resistant Twin Sphere Union Rubber Joints 5


The surface of the wave shape compensating element is rubber, and the inner layer is made from multilayer of strong fiber or steel band (wire). The layers of fiber or steel band (wire) has been extended to the ends of the rubber flange, the flange has a hard steel wire skeleton. The rubber expansion joint has a larger displacement compensation ability, which can compensate the axial, lateral and angular displacement, which can reduce the noise, absorb the vibration and has anti corrosion ability. Rubber expansion joints have excellent high pressure resistance, good elasticity, large displacement compensation, nice vibration absorption and noise reduction capability, convenient installation, widely used in water supply and drainage, HVAC, fire control, compressor, paper, pharmaceutical, ship, water pump, fan and other piping systems.


Q. Do you provide samples?Is it free or extra?
A: Yes, we could offer the sample for free charge but do not pay the cost of the freight.

Q. Can I have my own Logo on the product?
A: Yes, you can send us your drawing and we can make your logo, but you have to bear
their own the cost.

Q. Can I request to change the form of packaging and transportation?
A: Yes, we can change the form of the packaging and transportation as per your request, but you have to bear their own costs incurred during this period and the spreads.

Q. How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock.Or it is 15-20 days if the goods are not in stock,it is according to your quantity.

Q C an I request to advance the shipment?
A: It should be depends on whether there is sufficient inventory in our warehouse.

Q. Can you produce the products according to my own drawings?
A: Yes, we can produce the products according to your drawings that will be most satisfy you.

Q. What is your payment terms?
A: Payment<=1000USD,100% in advance.
Payment>=1000USD,30% T/T in advance,banlance before shippment.


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