Contacts
Location
Mumbai – 400072
Contact
sales@velqor.com
Check & Non-Return Valves
Inline check valves for reliable one-directional flow control — free-flow, low cracking pressure, with a lockable adjustable configuration also available.
Need a Custom Valve?
Share your drawing or specifications and we'll help you with the right valve solution.
Send RequirementReliable One-Way Flow Control for Every Circuit
Velqor check and non-return valves are precision-machined inline valves that allow free flow in one direction while blocking reverse flow. They're built for consistent, low cracking-pressure response across hydraulic circuits, with a standard free-flow configuration and an adjustable/lockable configuration available — built around your circuit design and approved drawing.
- Free-flow one-directional check function prevents reverse flow
- Low cracking pressure for reliable, responsive operation
- Inline BSP connections from G1/4" to G2"
- Adjustable, lockable configuration also available (NV series)
- Material and seal options based on requirement
Precision CNC Machining
Variants Available
Sizes, Series, and Materials to Match Your Circuit
Every configuration below is confirmed against your requirement, drawing, or sample before production.
Inline free-flow check valve, G1/4"–G3/4" (DN6–DN20), rated up to 400 bar.
Inline free-flow check valve, G1"–G2" (DN25–DN50), rated up to 350 bar.
Inline adjustable valve with a lockable setting, G1/4"–G1½", up to 500 bar — confirm function against your circuit requirement.
Standard body material for general hydraulic circuit applications.
Corrosion-resistant option for demanding or washdown environments.
Higher-grade corrosion resistance for aggressive or offshore environments.
Specifications
Typical Specification Inputs
Inline check valve (free-flow, one-directional); adjustable/lockable configuration also available
Carbon Steel, SS304, SS316 — as per requirement
G1/4" up to G2" (DN6–DN50)
Up to 400 bar (DN6–DN20); up to 350 bar (DN25–DN50); confirmed by size and seal selection
Typically 0.5–1 bar, confirmed per requirement
NBR, FKM, EPDM — as applicable
BSP (G) threads, DIN ISO 228 standard
-10°C to +100°C, depending on body & seal material selected
Final specifications, dimensions, materials, and performance details are confirmed against approved drawings, samples, or order requirements before production.
Applications
Where These Valves Are Used
Preventing reverse flow into hydraulic pumps and power units.
Maintaining accumulator charge by blocking backflow.
Back-flow prevention in hydraulic cylinder and actuator circuits.
Inline integration into manifold and panel-mounted circuits.
General one-way flow control across industrial machinery circuits.
Reliable non-return protection during system maintenance and servicing.
RFQ Checklist
To Quote This Product Accurately, We Need a Few Details
Share as much as you can — a drawing or sample photo speeds up the process considerably.
Frequently Asked Questions
What's the difference between the CV and NV series?
The CV series is a standard inline free-flow check valve, while the NV series is an adjustable configuration with a lockable setting. Share your circuit requirement and we'll help confirm the right one.
What cracking pressure do these valves use?
Typically 0.5 to 1 bar depending on size and application, confirmed per requirement.
What size range is available?
G1/4" up to G2" (DN6 to DN50), confirmed per requirement.
What's the maximum operating pressure?
Up to 400 bar for DN6–DN20 sizes, and up to 350 bar for DN25–DN50 sizes. Final ratings are confirmed against your approved drawing or specification.
Can Velqor manufacture as per drawing or sample?
Yes. We regularly manufacture to an approved drawing, sample, or specification provided by the buyer.
What materials and seals are available?
Common configurations use carbon steel, stainless steel 304, or stainless steel 316 bodies with NBR, FKM, or EPDM seals, confirmed per requirement.
Are these check valves suitable for load-holding circuits?
Check valves like these are commonly used to prevent reverse flow in accumulator and holding circuits. Share your specific holding requirement so we can help confirm the right configuration for your application.
Can Velqor support bulk export orders?
Yes, Velqor is set up for export-ready packaging and documentation. Share your destination country and quantity so we can confirm logistics and lead time.
Get Started
Ready to Source Check & Non-Return Valves?
Send your drawing, valve series, connection size, pressure and cracking-pressure requirement, material, quantity, and destination country. We'll review your requirement and help route it to the right configuration.