
GP402
Model GP 402 is a brass two stage regulator with neoprene diaphragms for general purpose laboratory applications.
- Body
- Brass / Chrome Plated
- Bonnet
- Painted Die Cast /
- Chrome
- Plated
- Diaphragm
- Neoprene
Features
- 0-15, 0-50, 0-125 and 0-250 PSIG delivery pressure
- One-piece encapsulated seat design to protect the seat
- Tamper-proof, self reseating internal safety valve
- 2” dual scale brass gauges (psi/kPa)
- Conforms to CGA E-4 standard for gas pressure regulators
Materials
| Body | Brass / Chrome Plated |
|---|---|
| Bonnet | Painted Die Cast / |
| Chrome | Plated |
| Diaphragm | Neoprene |
| Nozzle | Brass |
| Seat | PTFE Tefl on |
| Filter | Nickel-Plated Sintered Bronze - |
| Seat Return Spring | PH 17-7 Stainless Steel |
| Adjusting Knob | ABS Plastic |
| Outlet | 1/4” MNPT Brass |
Applications & Documents
29 Existing part numbers
- GP402-015-300
- GP402-015-510
- GP402-015-590
- GP402-050-320
- GP402-050-510P
- GP402-125-320
- GP402-125-350
- GP402-125-580
- GP402-125-590
- GP402-250-350
- GP402-250-540
- GP402-250-580
- GP402-250-590
- HUS-GP402-015-320
- HUS-GP402-015-350
- HUS-GP402-015-580
- HUS-GP402-015-580-D
- HUS-GP402-015-590-C
- HUS-GP402-015-590-D
- HUS-GP402-050-350
- HUS-GP402-050-540
- HUS-GP402-050-580
- HUS-GP402-050-580-D
- HUS-GP402-050-590
- HUS-GP402-125-540
- HUS-GP402-125-580-C-4
- HUS-GP402-125-580-D
- HUS-GP402-250-320
- HUS-GP402-250-580-D
Configure your order
Select the variables exactly as they appear in the manufacturer datasheet. The full part number is assembled automatically.
Delivery pressure
single select · 4 valuesDelivery pressure range; the value in parentheses is the supplied outlet gauge range.source: DELIVERY
Inlet connection
single select · 13 valuesCGA code of the inlet connection, or thread / tube fitting.source: DELIVERY
Accessory
single select · 12 valuesAccessory mounted on the regulator outlet.source: CGA/INLET FITTING
Options
multi select · 2 valuesAdd-ons and test certificates — multiple choices allowed.source: ACCESSORIES
Select variables
More from this category
Why GPTech
Since 2000
Multidisciplinary expertise in gas and advanced piping systems.
UHP grade
Products for ultra-high-purity clean-gas systems.
Engineering support
From product selection to installation and maintenance.
Fast response
Professional quotes quickly — via RFQ or WhatsApp.
Applications
We serve hundreds of customers across diverse industrial segments.
Need a quote?
Talk to our engineer and get a fast, professional response.




