H-911 Excess Flow Valves

H-911 Excess Flow Valves

1. The poppet is loaded by a spring in a normally open position as long as the system is balanced.
2. If the system becomes unbalanced and the downstream pressure drops, the poppet moves towards the sealing area and prevents free, uncontrolled excess
flow from the line.
3. If the downstream pressure increases, the ventilation outlet (“bleeding”) enables the system to balance the pressures and (with the help of the spring) reset the system. In this situation, the poppet reverts back to Normally Open.
Excellent for Automatic Safety Shutoff in a wide range of areas:
  • Fuel systems
  • Toxic Media Systems
  • Gas Systems
  • Valued Media Systems
  • Hydraulic & Pneumatic Systems
  • Stainless Steel Construction
  • MAWP 6000 psi (413 bar)
  • MAWT 400°F (204°C)
  • Variable connection sizes (1/8 to 1/2” & 6 to 12mm)
  • Cv = 0.5 ; 1.1
  • Safety System Shutoff Device

Lifetime Warranty

One of the most commonly asked question we hear from potential customers is:-

“Are your tube fittings Interchangeable and intermixable with Swagelok, Hoke Gyrolok, Parker A-lok etc”.

We are so confident that our components are manufactured to the same exacting standards and tolerances that we also provide a limited lifetime warranty to eradicate the misleading claims that components cannot be intermixed.

For additional information, test reports and actual “hands on demonstrations” please contact us to find out more.

HAM-LET Compression Fittings Official Distributor

As a result of extensive testing and evaluations by HAM-LET and from the many thousands of satisfied customers around the world who have chosen our products for SAFETY, RELIABILITY and PERFORMANCE, HAM-LET hereby warrants all products to be free from defects in material and workmanship.

This warranty shall also extend to the intermixing of components manufactured by several American organisations such as Swagelok, Hoke, Parker and HAM-LET products.

The manufacture shall be liable only if the product is used as specified in the current catalogues and written instructions.

The purchaser’s remedies shall be limited to replacement and installation of any parts that fail through a defect in material or workmanship.  Manufacture specifically disavows any other representation, expressed or implied, warranty, or liability relating to the condition or use of the product.


H-911 Excess Flow Valves HAM-LET

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