- MSC Edge Cutting Tools
- Abrasives
- Adhesives & Tapes
- Bearings
- Electrical
- Fasteners & Fixings
- Fluid Power
- Hand Tools
- Holemaking & Drilling Tools
- Janitorial & Site Maintenance
- Lathe Turning Tools
- Lubrication
- Machinery
- Material Handling
- Measuring & Inspection
- Mechanical Power Transmission
- Metalworking Fluids
- Milling Cutters & Tools
- Office Supplies
- Packaging
- Personal Protective Equipment
- Pneumatic & Power Tools
- Raw Materials
- Saw Blades
- Site Safety
- Storage & Shelving
- Threading Tools
- Toolholding
- Welding Supplies
- Workholding
- Workwear
- Shop All
Toggle Nav Shop All 
Over 120,000 products
Get next working day!*
Virtual Catalogue
Loc-Line 1/4in In-Line Check Valve 1/4in System - Pack of 2
Order Code
LOC-21191K
Brand: Loc-Line
Order Code: LOC-21191K
Manufacturer Part Number: 21191
Product Description:
The Loc-Line In-Line Check Valve Pack ensures one-way fluid flow in Loc-Line modular hose systems. Each valve prevents backflow and dripping after pump shutoff-ideal for CNC machining, EDMs, and pneumatic setups. Made from durable acetal copolymer with nitrile seals, they resist chemicals and withstand temperatures up to 77°C. This valve snaps into hose segments for quick, tool-free installation and delivers reliable performance in demanding environments.
| Type: | Check valve |
|---|---|
| Maximum Working Pressure (Bar): | 3.5 |
| Connection (in): | 1/4 |
| Manufacturer Part Number: | 21191 |
| Brand: | Loc-Line |
Description:
The Loc-Line In-Line Check Valve Pack ensures one-way fluid flow in Loc-Line modular hose systems. Each valve prevents backflow and dripping after pump shutoff-ideal for CNC machining, EDMs, and pneumatic setups. Made from durable acetal copolymer with nitrile seals, they resist chemicals and withstand temperatures up to 77°C. This valve snaps into hose segments for quick, tool-free installation and delivers reliable performance in demanding environments.
Features & Benefits:
•Colour: Orange
•One-way check valve - allows flow in one direction, blocks reverse flow
•Fits Loc-Line hose segments
•Material: Acetal copolymer body with nitrile (Buna-N) seals
•Pressure rating: Up to 30psi
•Temperature rating: Up to 77°C
•Chemical compatibility: Works with alcohols, oils, greases, detergents, and sodium hydroxide; not compatible with acetone, gasoline, chlorine, or acids
•Unidirectional flow control: Prevents backflow and dripping after pump shutoff
•Flexible placement: Can be installed anywhere in the hose line
•Quick installation: Snaps into hose segments without tools
•Durable and reusable: Resists wear, moisture, and chemical exposure
•Ideal for: Short-cycle operations, EDM machines, and splash zones
•One-way check valve - allows flow in one direction, blocks reverse flow
•Fits Loc-Line hose segments
•Material: Acetal copolymer body with nitrile (Buna-N) seals
•Pressure rating: Up to 30psi
•Temperature rating: Up to 77°C
•Chemical compatibility: Works with alcohols, oils, greases, detergents, and sodium hydroxide; not compatible with acetone, gasoline, chlorine, or acids
•Unidirectional flow control: Prevents backflow and dripping after pump shutoff
•Flexible placement: Can be installed anywhere in the hose line
•Quick installation: Snaps into hose segments without tools
•Durable and reusable: Resists wear, moisture, and chemical exposure
•Ideal for: Short-cycle operations, EDM machines, and splash zones
Need more than the quantity shown, get in touch with us to check the lead time
Price
£15.40 £12.83
Incl. VAT Ex. VAT
Brand: Loc-Line
Order Code: LOC-21191K
Manufacturer Part Number: 21191
Product Description:
The Loc-Line In-Line Check Valve Pack ensures one-way fluid flow in Loc-Line modular hose systems. Each valve prevents backflow and dripping after pump shutoff-ideal for CNC machining, EDMs, and pneumatic setups. Made from durable acetal copolymer with nitrile seals, they resist chemicals and withstand temperatures up to 77°C. This valve snaps into hose segments for quick, tool-free installation and delivers reliable performance in demanding environments.
Why we are loved
Rated ‘World-class’ for customer service