Model DA6
Back Pressure Regulator
SKU#:
Model DA6
- Description
The Model DA6 is a high performance, pressure loaded, back pressure regulator with top-guided piston-cylinder that provides high flow capacity and high pressure drop capability. Internal trim design allows the same basic unit to cover a broad range of pressure settings. Performance approaches that of competitive pilot-operated designs in the basic design. Applied primarily in clean gaseous service, but also can be applied as a liquid or steam valve. Truly a “DO-ALL” pressure regulator. Requires auxiliary pressure loading fluid.
Inlet Design Pressure
- Up to 750 psig (51.7 Barg)
Outlet Pressure
- 5 psig (0.34 Barg) to 750 psig (51.7 Barg)
Line Sizes
- 1/2" (DN15)
- 3/4" (DN20)
- 1" (DN25)
- 1-1/4" (DN32)
- 1-1/2" (DN40)
- 2" (DN50)
- 2-1/2" (DN65)
- 3" (DN80)
- 4" (DN100)
End Connections
- NPT
- FLANGED
- BSPT
- EXTENDED PIPE NIPPLES
- 14" FACE TO FACE
- EXTENSION TUBE ENDS
Material Combinations: Body / Diaphragm Case / Spring Chamber
- DI/DI
- BRZ/BRZ
- CS/DI
- BRZ/DI
- CS/CS
- HC/CS *
- HC/SST *
- SST/DI
- SST/CS
- SST/SST
* Through 2" body size only.
DI = Ductile Iron
CS = Carbon Steel
SST = Stainless Steel
HC = Hastelloy C
BRZ = Bronze
Features
- Versatile: Four basic materials and multiple trim material combinations to select from.
- Tight Shutoff: Multiple composition materials provide Classes II, IV or VI inboard leakage rates. Designed as a soft-seated valve.
- Capacity: Highest in the industry. Allows smaller body sizes than competitors in a majority of applications.
- Pressure Drop: One of highest in the industry when coupled with high flow capacity.
- Trim Design: "DO-ALL" trim design provides FTO flow direction. Results in high sensitivity and stability. Internals are cage-contained within easily removable quick change trim.
- Rangeability: Basic valve gives outstanding rangeability due to close tolerances, balanced trim, and a broad range of elastomeric diaphragms and soft seats. Can be as high as 1000:1.
- Heavy-Duty Guiding: Heavy top guided to maintain stability and increased diaphragm life.
- Failure Position: Fails open on loss of loading pressure. Fails closed on loss of P1 pressure with loading pressure yet applied.
