DK-LOK V33B Series Poppet Check Valve, 3000 psi, 3/8" Tube OD Connections, SS316, V33B-D-6T-1/3-S
Technical overview
The DK-LOK V33B series poppet check valve helps protect instruments and process lines by stopping backflow and maintaining flow direction in high-integrity tubing circuits. This fixed-cracking model uses DK-LOK tube fitting end connections and a spring-loaded poppet with FKM sealing for dependable shutoff performance. A compact SS316 construction suits chemical processing, power generation, and oil and gas service where clean, controlled one-way flow is required.
Key Features
- Fixed low cracking pressure designator 1/3 psi for sensitive flow start
- Spring-loaded poppet helps prevent reverse flow and protects downstream equipment
- DK-LOK tube fitting end connections for secure tubing installation
- SS316 body for corrosion resistance in industrial fluids
- Factory tested for cracking and reseal performance
Applications
- Instrument impulse lines and sampling systems
- Hydraulic and pneumatic utility circuits
- Chemical processing and general process tubing
- Power generation and oil and gas service lines
Specifications
SeriesV33B
Connection Size3/8" Tube OD
Nominal Cracking Pressure1/3 psi
Maximum Pressure3000 psig
Body Material316 stainless steel (SS316)
Seal MaterialFKM (Viton)
Orifice Size7.1 mm (0.28 in)