Ordering Options
Part number format:
RVD8-[Adjustment Style on Cap]N[Body Style]-[Pressure Setting Range]-[Body Material][Seals and Diaphragm Material][Cleaning Options][Lubrication Options].
Each bracketed segment is replaced by the code of the option chosen below; an option with no code is the standard choice and adds nothing.
| Option |
Code |
Choice |
|
Adjustment Style on Cap |
1 |
Slotted Screw With 3/16” Hexagonal Lock Nut |
| 2 |
Knurled Knob With 3/16" Hexagonal Lock Nut |
| 3 |
Knurled Knob With 3/4" dia. Knurled Lock Disc |
| 4 |
Slotted Screw With 3/4" dia. Knurled Lock Disc |
|
Body Style |
1 |
Standard Body |
| 6 |
2 in. High Resolution Diaphragm |
|
Pressure Setting Range |
0 |
- 0 to 5 psig (0.3 bar) |
| 1 |
- 0 to 10 psig (0.7 bar) |
| 2 |
- 0 to 20 psig (1.4 bar) |
| 3 |
- 0 to 30 psig (2.1 bar) |
| 4 |
- 0 to 40 psig (2.8 bar) |
|
Body Material |
None |
Brass |
| 3 |
303 Stainless Steel |
Seals and Diaphragm Material About this option
|
None |
Buna-N |
| V |
Fluorocarbon (FKM, Viton®) |
| E |
EPDM |
Cleaning Options About this option
|
None |
Standard Cleaning |
| I |
Instrument Grade Cleaning |
Lubrication Options About this option
|
None |
Standard Lubrication |
| X |
No Lubrication |
| K |
Krytox 240AZ Lubrication |
Overview
Description: Beswick’s RVD8 series miniature diaphragm relief valve is an excellent choice for applications requiring a valve which opens on rising pressure. The design offers compactness, light weight and high accuracy. Performance is similar to the RVD series.
Features: Manifold mount configuration.
Max Supply Pressure Rating: 80 psig
Cracking Pressure Range: Recommended for cracking pressures in the 3-30 psig range. The large diaphragm sensing area and frictionless design, make it especially well suited for low cracking pressures, below 30 psig. For applications requiring a higher cracking pressure please consult an applications engineer for additional details.
Approximate Weight: 25g in brass and stainless steel. Weight will vary slightly, depending on configuration. Selecting the 2 inch. high resolution cap option adds approximately 50-60g to total weight.
Porting: 10-32 external threaded outlet port. 0.050″ (1.27mm) diameter inlet ports.
Note: Care must be taken during installation to avoid shearing the manifold mount thread. Recommended torque spec is 7-9 in lbs.
Material: Brass or 303 stainless steel body. Both versions include an 18-8 stainless steel spring in the flow path.
Features
- Adjustable relief pressure setting.
- Manifold mount configuration.