Restrictors

Lee Jets are pre-calibrated, single orifice flow restrictors that are available in 0.156” and 0.187” diameter models. Offered in 87 standard Lohm rates, with tolerances of ± 2% and ± 5%, Lee Jets are easily installed into a manifold without the need for threads, seals, flow testing or filter screen design. Each Lee Jet is 100% tested and incorporates two integral safety screens for bidirectional flow.

Lee High Watt and Kilowatt Jets provide accurate, screened, bidirectional metered flow in the 90-1000 Lohm range. Due to their rugged construction, they can readily withstand the high power dissipation that is often associated with low Lohm applications. For instance, a 200 Lohm High Watt Jet dissipates 9.6 horsepower, or 7.1 kilowatts, at 3000 psi differential. Lee High Watt Jets are available in ±2% and ±5% tolerances and Kilowatt Jets in a ±5% Lohm rate tolerance.

Lee High Watt and Kilowatt Jets provide accurate, screened, bidirectional metered flow in the 90-1000 Lohm range. Due to their rugged construction, they can readily withstand the high power dissipation that is often associated with low Lohm applications. For instance, a 200 Lohm High Watt Jet dissipates 9.6 horsepower, or 7.1 kilowatts, at 3000 psi differential. Lee High Watt Jets are available in ±2% and ±5% tolerances and Kilowatt Jets in a ±5% Lohm rate tolerance.

NACE Compliant 250 H Bender Jets are multi-orifice restrictors made entirely from MP35N, a nickel-cobalt based alloy. Compliant with NACE MR0175/ISO 15156, these restrictors are specifically designed to offer exceptional corrosion resistance and performance for harsh duty applications found in the oil and gas industries.

The 156 Lee Bender Jet® is a miniature, lightweight multi-orifice restrictor. Weighing only 1.1 grams nominal, the 156 Bender Jet offers a 21% weight savings over the 187 Bender Jet and is 17% smaller in diameter, resulting in a corresponding reduction in installation boss size and weight.

The Lee Axial Visco Jet also uses multiple orifices in series, but uses spinning to increase Lohm rate. Spinner discs alternately reverse the direction of spin of the fluid. The result is a larger passage size than a Bender Jet for a given Lohm rate but smaller than a Visco Jet. Rugged screens protect the orifice in both flow directions. Axial Visco Jets are available calibrated to a ±5% tolerance in the 680 to 11,000 Lohm range.

Lee Visco Jets and Lee JEVAs provide the highest level of restriction with the largest minimum passage sizes in Lee’s line of precision flow restrictors. Lee Visco Jets are calibrated to restrictions up to 2,200,000 Lohms (an equivalent restriction of less than 0.0001” dia.). This is accomplished by the incorporation of several proprietary orifices in series, which force the fluid to both spin and change rotational direction. This results in a high level of restriction with a minimum passage size that is significantly larger than a comparable single orifice restrictor. The JEVA is a derivative of the Visco Jet design that provides a further increase in minimum passage size. All Lee Visco Jets and Lee JEVAs are available calibrated to a ±5% or ±10% flow tolerance. Visco Jets with minimum passageways of 0.032 inch or less are protected with two safety screens for bi-directional flow applications.

DenisDePloeg now offers the field proven JEVA product line in a robust, high pressure configuration that is rated to handle system pressures up to 5000 psi. Constructed entirely from 316L stainless steel and MP35N, the 5K JEVA offers exceptional corrosion resistance and performance for harsh duty applications.