API 7K Certified Rotary Vibrator Hose

General Specifications

Application: Used for high-pressure fluid transfer in drilling and exploration. They are designed to handle drilling mud, cement, and other fluids under extreme pressure, vibration, and abrasion.

Standard: API Specification 7K (latest edition). Some hoses may also meet ISO 14693 and have certifications from organizations like ABS (American Bureau of Shipping) or DNV-GL.

Hose Grades: API 7K hoses are classified into grades their working pressure ratings.

Grade A: 1,500 psi

Grade B: 2,000 psi

Grade C: 4,000 psi

Grade D: 5,000 psi

Grade E: 7,500 psi

Grade F: 10,000 psi

Grade G: 15,000 psi

Construction

Inner Tube (Liner): Made from synthetic rubber compounds, such as Modified Nitrile, HNBR, or UPE. This layer is designed to be resistant to oil, abrasion, corrosion, and the specific drilling fluids being used.

Reinforcement: Multiple layers of high-tensile, super-flexible steel wire or steel cable are spiraled around the inner tube. The number of layers and the wire type determine the hose’s pressure rating and flexibility.

Outer Cover: A durable synthetic rubber cover designed to resist abrasion, cutting, gouging, oil, weather, and ozone. It often features a unique color or stripe for identification.

Technical Parameters
Working Pressure: 1,500 psi to 15,000 psi (based on API Grade)

Test Pressure: Typically 1.5 times the working pressure. For a 7,500 psi hose, this would be 11,250 psi.

Burst Pressure: Minimum of 2.5 times the working pressure for Grades A-E and 2.25 times for Grades F-G. For a 7,500 psi hose, this is 18,750 psi

Temperature Range: −20∘C to +121∘C (−4∘F to +250∘F) is a common range, but some hoses are rated for a different range

Inside Diameter: 2″ to 6″

Flexibility Specification Level (FSL): FSL 1, FSL 2

End Connection: Hammer Union (e.g FIG1502), API Flange, or thread connection (LP, NPT, TBG, BSPT)

Max Length: 30 meters (100 FT)

Safety Clamps and Lifting Collar: available for purchase.