NPTLOK Union Tube Fittings Tube to Tube Compression Fittings
NPTLOK union tube fittings connect the same size metric or fractional tube od on both ends
- Tube Size: 1/8”-1”
- Material Grades: Stainless Steel 304, 316, Carbon Steel, Brass, Monel, Alloy400, and so on
- Pressure Ratings: Depends on size and material
- Standards: ASTM, International Standard
- Applicable Temperature: Depends on materials
- Brand Name: NPTLOK
- Datasheet
- Images
- Certificates
If you are looking for types of union tube fittings, download the catalog




Union Tube Fittings Parts
Union tube fitting can be reassembled many times, which does not damage any components. Union tube fittings have good resistance to mechanical vibration
Union tube fittings are composed of three primary parts Nut, Ferrule, and Body.
Union tube fittings connect two tubing or pipes by male and female ends with help of nuts.
Union Tube Fittings is a kind of fitting that is designed to connect two separated tubing or pipes. It is tube to tube, connecting the same size on both ends
Union Tube Fittings Application
Union tube fittings deliver excellent performance and meet customers’ requirements. NPTLOK offers stainless steel, carbon steel, brass, Monel, and alloy 400 union tube fittings.
Union tube fittings are used in industries like:
Power Plants
Petroleum Industry
General Purpose Applications
Oil & Gas Industry
Fertilizers
Chemical Industries

FAQ About NPT LOK Union Tube Fittings
You may have some questions about NPT LOK union tube fittings. Check the below FAQ, and you may find solutions.
If you have other questions about NPTLOK union tube fittings, kindly contact me by Email or What’s app.
You can send me your requirement for union tube fittings. I will quote you a price.
If you satisfy with the price, I will make PI for you.
After receiving advance payment, we will start to prepare materials and produce union tube fittings.
I will take union tube fittings for you after they are finished in production.
After receiving the balance payment, we will deliver union tube fittings to you. Our forwarder will handle this process, even the forwarder can clear the customs of your country, and pay tax for you. You just receive union tube fittings at your place.
From 1/8”-3/4” union tube fittings, the MOQ is 10 pcs. You can test the quality of union tube fittings as a trial order.
Absolutely No. NPTLOK refuses to print other brand logos on union tube fittings without authorization.
NPTLOK union tube fittings warranty is 2 years. Within 2 years, we will replace bad quality union tube fittings for free.
As NPTLOK is a real factory, you can get the factory prices. NPTLOK union tube fittings will save cost for your company.













