This bottle pressure gauge is designed for Nitrous Express kits which have a D-4 size valve. It also has two 1/8" NPT ports so you can connect both your pressure gauge and another 1/8" NPT accessory inline with a D-4 line for maximum flexibility.
Keep an eye on your nitrous bottle's pressure with a Nitrous Express bottle pressure gauge. Keeping your nitrous bottle at the right pressure is critical to ensure performance and safety. With this full-sweep, mechanical gauge, you can monitor this important part of your nitrous system easily.
The NX bottle pressure gauge has a range of 0 to 1500 PSI with color-coded areas to help you see at a quick glance see whether your bottle is too cold, ready to fly, or needs to depressurize.