The Lee Company's new 250 Zero Leak Chek^® is the latest addition to Lee's line of miniature, zero leak check valves. Available in forward and reverse flow configurations, the new Lee Chek uses an elastomeric seat to achieve zero leakage. (read more)

Performance Specifications:

Fluid: Valve operates in a variety of fluids (With Proper seal material installed)

Temperature Range:

Operating: As low as -65° F to 400° F (With proper seal material installed)

Operating Pressure: 500 PSID maximum

Cracking Pressure: 2.0 ± 0.5 PSID

Flow (Diesel Fuel): 0.5 GPM @ 3.0 PSID Max

Standard Seal material: Fluorocarbon (read more)

The GAS CHECK 3000 series of gas leak detectors identifies the source of gas leaks quickly and easily, and enables you to quantitatively measure any leakage found. (read more)

Varian introduced a new series of helium mass spectrometer leak detectors for testing the integrity of systems, chambers, containers, and parts by using helium as a tracer gas. The new VS Series includes the portable VS PR02 leak detector and the mobile (cart mounted) VS MR15 and VS MD30 leak detectors. (read more)

Helium Rugged Dry Sniffing Leak Detectors ASM 142 Series delivers unmatched features for a entry-level unit such as,a roughing capacity of 10 m3/h (7 cfm) with a usable helium sensitivity in the 10-11 atm.cc/s range. • The ASM142S, a dedicated sniffing unit. • The ASM142D is the most simple solution to dry helium leak detection. (read more)

No need to use an elevated platform or a fork lift to locate those hard to reach leaks or risk getting too close to high voltage electrical equipment when looking for arcing, tracking or corona! It is now possible to locate leaks in ceilings, overhead lines, check high voltage equipment at a safe distance and even scan hazardous gas lines safely. (read more)

ACS Industries manufactures high temperature exhaust seals for static and dynamic exhaust joint connections. The seals contain a knitted wire mesh core with either composite or graphoil filler depending on temperature and service. These seals are used from the manifold to the muffler in spring loaded or clamped connections providing a durable, low leak joint. (read more)

Zero leak check valves are designed using a combination of metal to metal seating with a secondary seal consisting of an elastomeric o-ring or Vespel®. (read more)

The clear Y-Check valve Type 304 is a weighted angle check valve and is used to automatically stop flow in the back direction when the fluid in the line reverses. (read more)

Lee Cheks are the smallest insert check valves available anywhere in the world. One model is only an eighth of an inch in diameter and slightly over 1/2 inch long. With almost one million successfully in service, some for over twenty years, Lee Cheks have proven reliability. Every Chek is 100% performance tested before delivery. Lee Cheks set the standard for size, weight, and dependability. (read more)