i-Quip HN-Series

Chemical Injection System

TCO Chemical Injection Systems are based on the high end I-Quip Technology Chemical Injection Devices. The first purpose built injection check valve was developed in 2001 and since then has been a benchmark standard installed for multiple operators globally.


ISO 14310 V0 qualified. The HN-Series represents the conventional series with a broad range of configurations. From a single compact barrier check valve to a modular dual or triple in line ISO 14310 V0 barrier qualified check valve system with preinstalled HX Type modular rupture cartridge. The main purpose of the HN-Series valves is to create your primary seal between the production tubing and the control line system. Supplying the chemicals for downhole chemical dosage and treatment.

Externally testable. All Devices carry the option of being equipped with an externally testable hydraulic control line connection. The HN-Series device is designed for permanent installation into the TCO range of chemical injection mandrels.

The HN-Series Barrier Qualified Injection check represents the highest level of integrity and is the first ever device purpose built for downhole chemical injection. Having over a decade in successful service the HN-series barrier is at the core barrier of all of the TCO special devices used for various injection applications.


•    Single Check Valves
•    Dual Check Valves
•    Special Triple Check Valves
•    Unique HX Type Rupture Cartridge
•    Optional Catch Screen (Recommended with external multi stage filter module)
•    Qualified to Statoil TR2385
•    ISO 14310 V0 Barrier Qualified
•    High Temperature up to 260°C/500°F(model dependant)
•    High Pressure up to 15 000 psi(dependant on connection used)
•    Testable System Integrity  
•    Internal filtration


•    HPHT
•    Dual Check Valves, completes well barrier envelope
•    Retrofit to existing system



Product Type

Max Outer Diameter(in)

Max Operation Temp
(° C/°F)

Max Body Rating(psi)

Max Diff. Pressure(psi)


Hydraulic Connections*


ISO 14310 Qualification

HN-Series 1 000 260/500** 15000*** 15000 Inc 625/825 1* & 2* Type 1 V0

*1= Non Testable Hydraulic Connection
*2= Testable Hydraulic Connection

**= Model dependant

***Dependant on connection used