Product Overview
The PARKER 8V-C08L-1/3-V-SS-PP is a high-precision instrumentation check valve from Parker’s 8V series, engineered for unidirectional flow control in analytical, process, and pneumatic instrumentation circuits. This valve permits free flow in the forward direction while providing zero-leak shutoff in the reverse direction, protecting sensitive downstream instrumentation such as transmitters, gauges, analyzers, and sampling systems from backflow, pressure surges, and cross-contamination. The 1/3-V configuration denotes a 1/3-inch body size with a Viton (FKM) elastomeric seal, while the SS-PP suffix indicates a 316 stainless steel body and wetted parts with a polypropylene (PP) soft-seat / seal component for broad chemical compatibility. With a cracking pressure of approximately 0.3 to 1 psi, the 8V-C08L delivers reliable, repeatable sealing performance in low-pressure instrumentation loops without introducing significant pressure drop during forward flow.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Instrumentation Check Valve (Hydraulic / Process & Pneumatic Valve) |
| Model Designation | 8V-C08L-1/3-V-SS-PP |
| Manufacturer | Parker Hannifin — Instrumentation Products Division |
| Body Size / Port Configuration | 1/3 in. (C08L series) — 1/8 in. instrumentation tube / NPT connection |
| Body & Wetted Materials | 316 Stainless Steel body; Polypropylene (PP) seat / seal component |
| Elastomeric Seal | Viton (FKM) — designated by “V” suffix |
| Operating Pressure | Standard instrumentation grade — rated up to 3000 psig (207 bar) at ambient temperature |
| Cracking Pressure | Low-pressure spring — approximately 0.3 to 1 psi (standard 8V-C series) |
| Operating Temperature Range | -20 °F to 400 °F (-29 °C to 204 °C) with Viton seal |
| Flow Direction | Unidirectional — free forward flow, zero-leak reverse shutoff |
| Mounting & Connection | Standard Parker instrumentation tube fitting / N |
Engineering Features & Advantages
- Precision Performance: The instrumentation check valve (hydraulic / process & pneumatic valve) delivers precise, repeatable performance with low hysteresis and stable control across the full working range.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction and wear-resistant internal components for extended service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original PARKER OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
- Rated Capability: Rated for pressure ratings up to 3000 psi, supporting stable operation across the full working range.
Typical Industrial Applications
This valve permits free flow in the forward direction while providing zero-leak shutoff in the reverse direction, protecting sensitive downstream instrumentation such as transmitters, gauges, analyzers, and sampling systems from backflow, pressure surges, and cross-contamination.
PRODUCT IMAGES

PARKER 8V-C08L-1/3-V-SS-PP Instrumentation Check Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine PARKER 8V-C08L-1/3-V-SS-PP Solenoid Directional Control Valve. This US-made hydraulic component features a robust spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.