Check / Vent Valves

Our 3000 Series Check Valves are designed to provide protection in liquid, gas, or vapor services where flow is required in one direction. All designs are non-slam, have high flow capacity, and are designed per API 6FA standards. Cracking pressure rates are factory preset per customer specifications.

ALTERNATIVE NAMES

Vaccuum Valve - Low Pressure Relief - Vent Valve
Non-Slam - Black Flow Preventer

APPLICATIONS

Bulk Storage - Vessel Inlets - One Direction Flow -
Custom Cracking Pressure - Reverse Flow Charge

To schedule a brief presentation that can be held at your location or via Webinar, please
contact us at Sales@totalvalve.com

Wafer Model

Model 3200

 

*Basic options Carbon Steel Bodies, Stainless Internal. Other Materials are available. Available by different Pressure Classes. All dimensions are listed in inches. Dimensions shown are for standard design. Valves are custom-engineered and dimensions provided above are for reference only. Dimensions are subject to change without notice.

3200 Series Back Pressure Check Valves are designed to provide protection in liquid, gas or vapor service where flow is required in one direction. Generous flow capacities and lightweight construction makes it ideal for use in tank filling operations. The 3200 Series is designed to easily insert between ANSI flanges. This valve can also be used as a vacuum breaker or low-pressure relief device with the addition of a soft seat. Available in carbon or stainless steel. Other materials available upon request. Cracking pressure rates are factory preset per customer specifications.


Double Flanged Models

Model 3220

 

*Basic options Carbon Steel Bodies, Stainless Internal. Other Materials are available. Available by different Pressure Classes. All dimensions are listed in inches. Dimensions shown are for standard design. Valves are custom-engineered and dimensions provided above are for reference only. Dimensions are subject to change without notice.

3220 Series Back Pressure Check Valves are designed to provide protection in liquid, gas or vapor service where flow is required in one direction only into the vessel. The 3220 Series is designed where end-to-end flange connections are required. This valve can also be used as a vacuum breaker or low-pressure relief device with the addition of a soft seat. Available in carbon steel or stainless steel. Other materials available upon request. Cracking pressure rates are factory preset per customer specifications.


Model 3400

 

*Typical dimensions are listed. Data contained herein can be altered to accommodate design changes. Information on this page is the sole property of L6 Inc. d/b/a Total Valve Systems.

3400 Series Excess Flow Valves are designed to provide protection for LPG (Liquid Propane Gas) service with a specific weight of 0.508 kg/L. The 3400 Series is designed to meet specific flow requirements and size requirements. These requirements are listed in the data below. The internal parts for the valves are stainless steel while the bodies are carbon steel.
Download Product Specification Sheet
Download Technical Information Inquiry Form


Model 3600

 

*Basic options Carbon Steel Bodies, Stainless Internal. Other Materials are available. Available by different Pressure Classes. All dimensions are listed in inches. Dimensions shown are for standard design. Valves are custom-engineered and dimensions provided above are for reference only. Dimensions are subject to change without notice.

The 3600 Series Check Valves allows flow through when the desired cracking pressure is reached. Various sizes are used in laboratories to refineries, chemical processing plants, semiconductor industry, pharmaceutical, biotech and food plants.

Unique features include an external adjustment for changing the cracking pressure. Adjustments can be made externally by turning a threaded member extending through the valve, which causes a retainer to move laterally within the chamber. The threshold cracking pressure of the valve can be set.

Available in carbon steel and stainless steel. Other materials are available upon request. Internal components are stainless steel. Optional accessories are softseats and actuators.


Threaded Models

Model 3230

 

*Basic options Carbon Steel Bodies, Stainless Internal. Other Materials are available. Available by different Pressure Classes. All dimensions are listed in inches. Dimensions shown are for standard design. Valves are custom-engineered and dimensions provided above are for reference only. Dimensions are subject to change without notice.

3230 Series Back Pressure Check Valves are designed for use in liquid, gas or vapor service for such items as bulk storage tanks where flow is desired in only one direction. 3230 Series has male NPT connections on the inlet side and female NPT connections on the outlet side. These valves can also be used as a vacuum breaker or low-pressure relief device. Cracking pressure rates are factory preset per customer specifications.
Download Product Specification Sheet
Download Technical Information Inquiry Form


Model 3240

 

*Basic options Carbon Steel Bodies, Stainless Internal. Other Materials are available. Available by different Pressure Classes. All dimensions are listed in inches. Dimensions shown are for standard design. Valves are custom-engineered and dimensions provided above are for reference only. Dimensions are subject to change without notice.

3240 Series Back Pressure Check Valves are designed for use in liquid, gas or vapor service for such items as bulk storage tanks where flow is desired in only one direction. The 3240 Series has female NPT connections on the inlet side and male NPT connections on the outlet side. These valves can also be used as a vacuum breaker or low-pressure relief device. Cracking pressure rates are factory preset per customer specifications.
Download Product Specification Sheet
Download Technical Information Inquiry Form


Model 3250

 

*Basic options Carbon Steel Bodies, Stainless Internal. Other Materials are available. Available by different Pressure Classes. All dimensions are listed in inches. Dimensions shown are for standard design. Valves are custom-engineered and dimensions provided above are for reference only. Dimensions are subject to change without notice.

3250 Series Back Pressure Check Valves are designed for use in liquid, gas or vapor service for such items as bulk storage tanks where flow is desired in only one direction. The 3250 Series has female NPT connections on the inlet side and female NPT connections on the outlet side. These valves can also be used as a vacuum breaker or low-pressure relief device.
Download Product Specification Sheet
Download Technical Information Inquiry Form


Model 3260

 

*Basic options Carbon Steel Bodies, Stainless Internal. Other Materials are available. Available by different Pressure Classes. All dimensions are listed in inches. Dimensions shown are for standard design. Valves are custom-engineered and dimensions provided above are for reference only. Dimensions are subject to change without notice.

3260 Series Back Pressure Check Valves are designed for use in liquid, gas or vapor service for such items as bulk storage tanks where flow is desired in only one direction. 3260 Series has male NPT connections on the inlet side and male NPT connections on the outlet side. These valves can also be used as a vacuum breaker or low-pressure relief device.
Download Product Specification Sheet
Download Technical Information Inquiry Form


4915 Series (Wafer)

 

*Typical dimensions are listed. Data contained herein can be altered to accommodate design changes and changes to increase performance. Information on this page is the sole property of L6 Inc. d/b/a Total Valve Systems.

Vent Valve Model 4915 can be used as check valve, vacuum breaker or a low-pressure relief valve. These valves are lightweight and are designed to easily insert between flanges. Minimum settings are 2 ounces for both vacuum and pressure.

  • Vacuum relief or pressure relief
  • Soft seat standard with a wide range of elastomers available
  • Metal seats available for high temp applicatations
  • Sizes range from 1” to 20”
  • Constructed to give long lasting service
  • Lightweight construction makes for easy installation
  • Available in carbon steel or 316 stainless steel
Download Product Specification Sheet
Download Technical Information Inquiry Form


4925 Series (Threaded):

 

Model 4925 Vent Valve is designed as a pressure or a vacuum vent valve. The minimum settings are 2 ounces for pressure and 2 ounces for vacuum.

  • Vacuum relief only
  • Pressure relief only
  • Soft seat materials available with a wide range of elastomers to choose from
  • Metal to metal seats available
  • 1/2" NPT to 3" NPT threads
  • Heavily constructed giving long lasting service
  • Available in carbon steel or stainless steel.
  • Other materials available upon request
Download Product Specification Sheet
Download Technical Information Inquiry Form









Our Address

Corporate | Operations
1300 East Memphis
Broken Arrow, OK 74012, US
P: (918) 258-7035 | F: (918) 251-6426
Toll Free: (800) 324-7035

Invoices | Payments
P.O. Box 1957
Broken Arrow, OK 74013, US

Associations

Connect with us