MDI Manufacturing & Design Inc.
MDI Manufacturing & Design Inc.
7687 San Fernando Road
Burbank, CA 91505
Phone: 818.246.2300
Fax: 818.767.6469
Email: info@mdionline.net
Website: www.builtsystems.net
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10000 psi, 3/8" ports, 5 gpm max flow rate.
Application: Multistrand, double acting stressing jacks with an auxiliary seating cylinder.
Actuation: Dual lever operated, detent positioned.
Used on these pumps: PA17 (These pumps may have reduced first flow stage characteristics due to internal valve restrictions.), PA46 (These pumps may have reduced first flow stage characteristics due to internal valve restrictions.), PA55, PE17(These pumps may have reduced first flow stage characteristics due to internal valve restrictions.), PE21 (These pumps may have reduced first flow stage characteristics due to internal valve restrictions.), PE30, PE46 (These pumps may have reduced first flow stage characteristics due to internal valve restrictions.), PE55, PE84, PE120, PE200, PE400, PG30(These pumps may have reduced first flow stage characteristics due to internal valve restrictions.), PG55, PG120, PG400, PQ60 and PQ120 series. (These pumps may have reduced first flow stage characteristics due to internal valve restrictions.)
To prevent sudden, uncontrolled descent of a load as it is being lowered, use a No. 9596 Load Lowering Valve or No. 9720 Counter Balance Valve in conjunction with the directional valve used in your application. Conversion kit 251528 must be used when mounting any of the valves on PA17 or PE17 pumps.
Unit of Measure

Specifications

Valve Type

 N/A Post Tensioning

Actuation

 N/A Dual Lever Operated, Detent Positioned.

Pressure Rating

 N/A 10000 psi

Max. Flow Rate

 N/A 5 GPM

Port Size

 N/A 3/8 inches

Function

 N/A Special Advance/Return

Operation

 N/A Manual

Application

 N/A Single Acting Cylinder Double Acting Cylinder

Used On Pumps

 N/A PE17 PE21 PE30 PE46 PE55 PE84 PE120 PQ60 PQ120 PA55 PA17 PA46 PE200 PE400 PG30 PG55 PG120 PG400

Weight

 N/A 13.6 lbs.

Ship Weight

 N/A 14.3 lbs.

Operation

N/A 1. With valves “A” and “B” in center position, pump is started; cable is inserted into stressing tool.
2. Valve “A” is placed in “Stress” position; cylinder extends to tension cable. Pump pressure controls force exerted by tensioning cylinder in this position. “Stress” port is checked internally, and can only be released by building pressure in the valve “B” return position.
3. When desired cable tension is achieved, valve “A” is placed in valve “B” position and valve “B” in “Seat” position. Seating portion of cylinder will be pressurized to seating pressure controlled by “Seat” relief valve (factory set to 3900 psi).
4. Valve “B” is shifted to “Return” position, which is pressure controlled and will not exceed 2200 psi. “Return” portion of stressing tool should be pressurized and will release “Stress” port when pressure reaches 15% of “Stress” port pressure.
5. “Stress” port will remain open and cylinder will return as long as pressure differential is maintained. “Stress” and “Seat” ports are open to reservoir.
6. When cylinder has fully returned, both valves are shifted to “Center” position and oil will be directed to reservoir. Maximum pressure setting for the “Seat” relief valve is 6000 psi.