Spectra High Pressure Tube Fitting Assembly

Use ONLY Dayco Imperial Nylo-Seal 88-NSR-1/2 tubing for high pressure connections.

Carefully fit and measure the tubing before cutting with a sharp razor knife or hose cutter and remove any burrs. Minimum tubing bend radius is 6”. Route tubing away from excessive heat sources and secure from vibration and chafe. Have at least one shallow bend in the tube assembly after it is installed.

Refer to figure 1. If a fitting has been dissembled, reassemble as illustrated. The notch on the ferrule must engage the inside of the nut properly for the nut to seat down fully. Once the tube is inserted the ferrule and nut will naturally align.

Refer to figure 2. Insert tube fully into the fitting, it should go in 0.9”. Tighten the nut finger tight while moving the tube around to prevent binding. One thread should be showing under the nut. Secure the tube so it won’t back out when tightening.

Refer to figure 3. Use 13/16” wrench to hold a straight body fitting or a 3/4” wrench for a 90º body, and a 7/8” wrench for the nut. Hold the body, recheck the tube insertion, then tighten the nut 1-1/4 turns. Use the index mark on the nut as a guide. The threads should be completely covered by the nut.

Make sure these fittings are tight on initial assembly or they will fail!

The correct torque is specification is 85 foot pounds

Figure 1.

Figure 2.

Index mark

Straight thread

Straight or 90 deg.

 

 

3/8" pipe thread

NutFerruleBody

Nut finger tight with 1 thread showing

Cut tube square

Black high pressure tubing

Tighten 1-2/3 turns (10 flats of the

 

nut) with a7/8" wrench after finger tight.

 

Use index mark as guide

No threads showing

Figure 3.

Insert tube 0.9" until it stops

IMPORTANT!

 

 

Hold fitting body with

a

 

wrench when tightening

13

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Spectra Watermakers MPC-5000 owner manual Spectra High Pressure Tube Fitting Assembly
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MPC-5000 specifications

The Spectra Watermakers MPC-5000 is a highly efficient water desalination system designed for a variety of applications, including marine, off-grid, and emergency situations. Known for its reliability and innovative technology, the MPC-5000 stands out as one of the leading solutions for producing fresh water from saltwater.

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