
DRA500
UHP springless tied-diaphragm low-pressure reducing regulator, VCR type, in 1/4" and 1/2". High flow — Cv 0.5. Body in 316L or VAR (double melt) stainless, electropolished. Inlet to 3,500 psig (238 bar), outlet 5–150 psig. Metal-to-metal sealing, inboard leak rate to 1×10⁻⁹ atm cc/sec helium.
- Body
- 316L / 316L VAR (double melt) stainless, electropolished
- Diaphragm
- 316L stainless / Hastelloy-C
- Type
- Springless tied diaphragm
- Surface finish
- E.P. 10Ra or 5Ra
Materials
| Body | 316L / 316L VAR (double melt) stainless, electropolished |
|---|---|
| Diaphragm | 316L stainless / Hastelloy-C |
| Type | Springless tied diaphragm |
| Surface finish | E.P. 10Ra or 5Ra |
| Max inlet | 3,500 psig (238 bar) |
| Outlet range | 5 psig (0.3 bar) to 150 psig (10.3 bar) |
| Ports | 1/4" · 1/2" VCR |
| Flow capacity | Cv 0.5 (1/4" and 1/2") · Cv 1.0 (option) |
| Inboard leak rate | to 1×10⁻⁹ atm cc/sec helium |
| Design proof | 150% of maximum rated |
| Cleaning | Class 100 / Class 10 clean room |
Applications & Documents
Configure your order
Select the variables exactly as they appear in the manufacturer datasheet. The full part number is assembled automatically.
Body Material & Surface Finish
single select · 3 valuesOutlet Pressure Range
single select · 5 valuesDiaphragm Material
single select · 2 valuesMax. Inlet Pressure
single select · 3 valuesSeat Material
single select · 3 valuesFlow Capacity
single select · 2 valuesInlet / Outlet Ports Size & Type
single select · 15 valuesGauge Ports Options
single select · 10 valuesSelect 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.




