• Designed to prevent “water hammer.” The spring-assisted, axial flow, in-line, nozzle style, non-slam design featured in all DFT® check valves insures that as the forward flow in a pipeline decreases, the disc begins moving closer to the seat. By the time the flow stops, the disc is closed against the seat preventing flow reversal. This prevents the valve from slamming closed, which can cause “water hammer” and the resultant noise and damage to piping systems.
• Designed to open at approx. 0.5 psi differential pressure and fully open at 1.0 psi differential pressure
• Can be installed in ANY position. Including vertical with flow up or down (Special springs may be required.)
• MSS SP 126-2000 Steel Non-slam Spring-Assisted Center Guided Check Valves Standard. DFT® carbon steel, stainless steel and alloy valves meet this standard
• Meet or exceed MSS SP-61 leakage requirements. Metal-to-metal seating is standard in all DFT® non-slam check valves
• Dual-guided stems. The stem is guided upstream and downstream in certain designs, to guard against vibrations and insure proper disc seating
• Custom sizing available. The following DFT® check valves can be sized to the appropriate flow conditions: ALC®, Excalibur®, GLC®, WLC®, and Y-Calibur™
• Pulse-damping design

The DFT® Model PDC® is specifically designed for use on the discharge of reciprocating air or gas compressors. The design includes a pulse-damping chamber to protect against premature seat wear due to chattering.

• Liquids, gas or steam. All DFT® non-slam check valves provide positive shutoff for applications involving liquids, gas, or steam. Applications include chemical lines, fluid injection, condensate recovery, steam, nitrogen, pump, and compressor discharge, chiller and boiler feed systems.
• Maintenance and Installation guides available for all DFT® non-slam check valves.

• Designed to prevent “water hammer”
• Spring assisted, in-line design ensures that as the forward flow decreases, the disc begins to move closer to the seat
• Real flexibility in application, from 1/4 to 24 “ 150 – 2500# class

• Designed to prevent “water hammer.” The spring-assisted, axial flow, in-line, nozzle style, non-slam design featured in all DFT® check valves insures that as the forward flow in a pipeline decreases, the disc begins moving closer to the seat. By the time the flow stops, the disc is closed against the seat preventing flow reversal. This prevents the valve from slamming closed, which can cause “water hammer” and the resultant noise and damage to piping systems.
• Designed to open at approx. 0.5 psi differential pressure and fully open at 1.0 psi differential pressure
• Can be installed in ANY position. Including vertical with flow up or down (Special springs may be required.)
• MSS SP 126-2000 Steel Non-slam Spring-Assisted Center Guided Check Valves Standard. DFT® carbon steel, stainless steel and alloy valves meet this standard
• Meet or exceed MSS SP-61 leakage requirements. Metal-to-metal seating is standard in all DFT® non-slam check valves
• Dual-guided stems. The stem is guided upstream and downstream in certain designs, to guard against vibrations and insure proper disc seating
• Custom sizing available. The following DFT® check valves can be sized to the appropriate flow conditions: ALC®, Excalibur®, GLC®, WLC®, and Y-Calibur™
• Pulse-damping design

The DFT® Model PDC® is specifically designed for use on the discharge of reciprocating air or gas compressors. The design includes a pulse-damping chamber to protect against premature seat wear due to chattering.

• Liquids, gas or steam. All DFT® non-slam check valves provide positive shutoff for applications involving liquids, gas, or steam. Applications include chemical lines, fluid injection, condensate recovery, steam, nitrogen, pump, and compressor discharge, chiller and boiler feed systems.
• Maintenance and Installation guides available for all DFT® non-slam check valves.

• Designed to prevent “water hammer”
• Spring assisted, in-line design ensures that as the forward flow decreases, the disc begins to move closer to the seat
• Real flexibility in application, from 1/4 to 24 “ 150 – 2500# class

• Constant torque output across full stroke.
• Balanced force vectors reduce side loading on valve stems.
• Operates in extreme environments: -40°F to 180°F (-40°C to 82°C).
• Suitable for slurry, natural gas and other applications.
• Easy adaptation to all quarter-turn valves.

• Simplified, Robust Design: Design enhancements to reduce potential leak paths, minimize maintenance, and extend service life. Fewer moving parts mean fewer failures and lower total cost of ownership.
• Seamless Integration with ValvTechnologies Valves: optimized to pair with ValvTechnologies’ valves, creating a fully integrated severe-service solution. This synergy ensures maximum performance and reliability across the entire valve-actuator package.
• Designed for severe service environments. Purpose-built for large bore isolation valves.
• Simplified, Robust Design:  Opposite chambers in the actuator are connected by pressure equalizing passages in the upper and lower head.
• Simplified, Robust Design:  The actuator produces well-balanced torque as hydraulic force pushes both of the rotary vanes away from the shoes

• Yoke Selection– available with symmetric or canted yokes.
• Corrosion Resistant –  three stages of internal and external coatings plus PTFE inner cylinder surface.
• Modular Design– available field-serviceable drive, power, spring and override modules.

• Travel Adjustment – Bi-Directional travel stops allow 80° to 100° adjustment. preventing ingress of foreign object or water.
• Replaceable Bearings – Replaceable bearings protect sliding and rotating parts in dry and lubricated conditions.
• High Efficiency – The piston rod and guide block connection, superior surface finishes and self-lubricating bearings maximize input energy .