 LINE
REGULATORS
SG4820 Series
High Precision, Low Flow, Instrument Regulators
The SG4820 Series regulators are designed primarily for use in analytical instrument applications and are suitable for line or panel mounting. These
high precision, direct acting, non-relieving regulators provide bubble-tight shutoff with helium at 100 psig.
Standard Features
- High Resolution Design (0–15 Turns Over Full Delivery Pressure Range) provides precise pressure control necessary for use with analytical instruments.
- Filter Screens in Ports trap foreign matter, extend regulator life and reduce maintenance.
- Mounting Nuts permit regulator to be panel mounted.
Optional Features
- 2 Micron, Type 316 Stainless Steel or Aluminum Alloy Inlet Filter provides additional protection from particulates for regulator and downstream system.
Specifications
Maximum Inlet Pressure: 250 psig
Delivery Pressure Range
Maximum Operating Temperature: 140°F
Maximum Flow Capacity: 1,000 sccm air
Inlet, Outlet and Gauge Ports: 1⁄8" NPT female
Supply Pressure Effect: 0.07 psi per 10 psi
Approximate Weight: 0.5 lb |
Materials of Construction
Body
Bonnet: Aluminum
Valve Stem and Valve Spring:
Type 316 Stainless Steel
Seat: Teflon®
Diaphragm and Seals:
SG4820: Buna-N,
SG4821: Viton®
Adjusting Spring: Zinc-Plated Music Wire
Optional Equipment
| Equipment |
Part No. |
| Inlet Filter, 2 micron, for Model SG4820 |
FM4741 |
| Inlet Filter, 2 micron, for Model SG4821 |
FM4746 |
|
Table I
Delivery Pressure
Range (psig) |
Model SG4820
(Aluminum Body) |
Model SG4821
(Type 316 SS Body) |
| 0–0.5 |
SG4820-1 |
SG4821-1 |
| 0–10 |
SG4820-10 |
SG4821-10 |
| 0–30 |
SG4820-30 |
SG4821-30 |
| 0–60 |
SG4820-60 |
SG4821-60 |
| 0–100 |
SG4820-100 |
SG4821-100 |
| 0–200 |
SG4820-200 |
SG4821-200 |
|
