Scott Equipment Company supports NGT Specialty Valves pneumatic load-holding, cylinder-locking and bubble-tight valve solutions for manufacturers, OEMs and machine builders throughout North and South Carolina.
NGT Specialty Valves for Pneumatic Load Holding & Cylinder Control
NGT Specialty Valves manufactures pneumatic valves designed for load holding, trapped-pressure control and bubble-tight applications. Its product line includes pilot-operated check valves, dual locking valves, pneumatic counterbalance valves, vacuum blow-off valves, normally open valves and check-valve cartridges for OEM manifold designs.
Specialized Pneumatic Valves for Load Holding & Precise Control
NGT Specialty Valves focuses on pneumatic applications where conventional directional valves may not provide the required load holding, leak performance or motion control. The company manufactures its valves in the United States, tests valves before shipment and maintains a broad inventory of standard models while also supporting specialty valve requirements.
Load Holding
Pilot-operated and dual check valves can trap compressed air at the actuator to help maintain position when system pressure falls or pneumatic supply is interrupted.
Bubble-Tight Performance
NGT specializes in low-leakage valve designs intended for pneumatic systems where cylinder drift and leakage through conventional control valves can affect machine performance.
Application-Specific Options
Available configurations include manual release, flow control, adjustable pilot pressure, lower pilot-pressure options, high- and low-temperature seals, BSPP ports and selected stainless-steel designs.
Explore NGT Pneumatic Specialty Valves
Use these product areas as a starting point for pneumatic cylinder load holding, drift control, controlled stopping, counterbalance applications, vacuum handling and OEM valve-manifold designs.
Pilot-Operated Check Valves
NGT pilot-operated check valves trap air in pneumatic devices when pressure drops or is lost. Current configurations cover port sizes from 1/8 through 3/4 NPTF, with BSPP options and features such as manual release, flow control, adjustable pilot pressure and selected stainless-steel construction.
Explore Pilot-Operated Check Valves →Dual Pilot-Operated Locking Valves
Dual locking valves trap air on both sides of a pneumatic cylinder piston to help maintain position, reduce bounce and control unwanted cylinder movement. Current models include compact configurations and higher-flow versions with optional manual release and flow control.
Explore Dual Locking Valves →Dual Pneumatic Valve
The current D6C0MC/D6CFMC valve family applies back pressure to the cylinder piston to reduce jerky motion and help prevent runaway cylinder movement before back pressure develops.
Explore New NGT Products →Pneumatic Counterbalance Valves
NGT pneumatic counterbalance valves are designed to hold a load in position until pneumatic pressure or an external force is applied. Adjustable designs allow the load-carrying behavior to be tuned for the application.
Explore Counterbalance Valves →Vacuum Blow-Off Valves
NGT vacuum blow-off valves combine vacuum holding and positive-pressure blow-off in a compact valve. An internal check can maintain vacuum when the supply is removed, while applied pressure helps release or eject the handled part.
Explore Vacuum Blow-Off Valves →Normally Open Pneumatic Valves
NGT normally open, pilot-to-close valves remain open until pilot pressure is applied. An internal floating check permits free flow from input to output while the valve provides very low leakage when closed.
Explore Normally Open Valves →OEM Check-Valve Cartridges
Pilot-operated check cartridges provide OEMs with a way to integrate NGT load-holding valve technology directly into custom manifolds and machine-specific pneumatic assemblies.
Explore NGT Products →Replacement & Service Components
NGT offers replacement kits for current A, B and D Series valves along with applicable coils and connection components to support installed valve assemblies.
Explore Replacement Components →Solving Pneumatic Load-Holding & Motion-Control Problems
NGT valves are especially useful where a pneumatic actuator must maintain position, cylinder drift needs to be minimized or uncontrolled movement must be reduced when pressure conditions change.
Cylinder Load Holding
Pilot-operated check valves can isolate the cylinder from upstream leakage and trap air at the actuator when supply pressure falls.
Cylinder Drift Reduction
Low-leakage locking valves help address actuator movement caused by leakage through conventional directional-control valves.
Controlled Stopping
Flow-control and adjustable pilot configurations can help control stopping behavior and reduce abrupt movement in appropriate pneumatic applications.
Runaway Load Control
Dual pneumatic and counterbalance valve designs can help control applications where changing load conditions may otherwise produce sudden or uncontrolled cylinder movement.
Vacuum Pick-and-Place
Vacuum blow-off valves can maintain vacuum without a continuous vacuum source and provide positive pressure to release parts during automated handling.
OEM Pneumatic Manifolds
NGT cartridge products allow load-holding functionality to be incorporated directly into custom manifolds and application-specific pneumatic circuits.
Help Solve Pneumatic Load-Holding & Cylinder-Control Applications
Our Sales and Technical Teams can help review cylinder size, load direction, trapped pressure, pilot pressure, flow requirements, port size, temperature and desired stopping behavior when selecting an NGT valve. Through our WBIYII — We Build It, You Install It program, NGT valves can also be incorporated into preassembled pneumatic circuits, manifolds and installation-ready assemblies.
Load-Holding Review
Evaluate cylinder orientation, load, trapped pressure and the required behavior during a loss or reduction of pneumatic supply pressure.
Pilot & Flow Requirements
Review pilot pressure, operating pressure, valve flow capacity and whether standard, low-pilot-pressure, flow-control or adjustable-pilot configurations are appropriate.
Environmental Options
Identify requirements for high- or low-temperature seals, stainless construction, NPTF or BSPP ports and other available valve configurations.
WBIYII Pneumatic Assemblies
Combine NGT specialty valves with cylinders, directional valves, manifolds, fittings, tubing and air-preparation components into repeatable WBIYII assemblies or installation-ready kits.
Application note: NGT load-holding valves should be selected based on the complete pneumatic circuit, including cylinder bore and stroke, load direction, operating and pilot pressure, flow requirements, valve placement, stopping characteristics, temperature and maintenance requirements. Do not assume a load-holding valve by itself satisfies a machine-safety function; applicable machine risk assessment and safety requirements should be reviewed separately.
Find the Right Specialty Valve for the Pneumatic Circuit
Use NGT's current product information together with Scott Equipment Company's pneumatic and vacuum resources to evaluate load holding, cylinder control and specialty valve requirements.
Complete the Pneumatic Motion System
NGT specialty valves typically operate as part of a larger pneumatic system that includes cylinders, directional valves, air preparation, tubing, fittings, sensors and machine controls.
Need to Hold a Pneumatic Cylinder or Solve a Drift Problem?
Share the cylinder size, load direction, operating pressure, pilot pressure, port size and the behavior you need during a pressure drop or loss of air. Scott Equipment Company can help review NGT Specialty Valves options and coordinate the supporting pneumatic components for your application.