News and Helpful Videos

NST20 Series Tandem Pump

Posted by Tammy Soper on

Charts below will give you the performance data, shafts, flanges and dimensions. When the pump speeds are at their lowest the flow from both of the pumps goes to the circuits. When the speed goes higher, one of the pumps partition starts to bypass the suction internally of the prominent pump. It has a bypass that is set at around 200 RPMs, If you need to know more about these pumps and their uses, call us at 800-361-0068 or email us at sales@htsrepair.com  

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Contrail After Market Hydraulic Parts

Posted by Tammy Soper on

After market CONTRAIL Hydraulic Parts is a subsidiary of Hydrostatic Transmission Service, LLC an after market CONTRAIL hydraulic parts needs Company located in Tupelo, Mississippi. We specialize in the remanufacturing and marketing of new, used, surplus, and remanufactured CONTRAIL Hydraulic rotating group parts such as CONTRAIL pistons, CONTRAIL cylinder blocks, and CONTRAIL valve plates used in CONTRAIL hydrostatic piston pump repair and CONTRAIL closed loop motors and CONTRAIL hydraulic piston and open loop pump repair and motors . Our main product lines consist of after market new, and remanufactured CONTRAIL replacement parts for CONTRAIL, piston pumps and motors. We can...

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Line Check Throttle Valves

Posted by Tammy Soper on

They have good control on double acting cylinders because they keep both sides pressurized. When it has an inertia load the cylinder doesn’t cave in and when the stroke is stretched out it maintains control. The flow of oil in one direction only or can be used as resists. They have different restrictors as options. When you put a restrictor on the valve it makes it a line throttle valve meaning it has the oil going in one direction and stops it at the other end. You can put on different poppets so you can tell them all apart. If...

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Pilot Engaged Check Valves & Lock Valves

Posted by Tammy Soper on

These valves are made to lock a cylinder or at best part of a circuit. When you don’t have leakage when the control valve is in neutral position. These valves work as a check valve, letting the flow that goes to the cylinder, while it blocks the turnaround of the flow til the pilot pressure made to unlock the circuit. Both valves have a two stage poppet, while reducing shock. These valves give long life holding of a cylinder position and give constant operation. LD1 specs Flow Rate – 1/4″…………………………….8 GPM 3/8″ & 1/2″ ……………………………………25 GPM Highest Operating Pressure……….3000 PSI...

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American Aero Crane Hydraulic Parts

Posted by Tammy Soper on

This American Aero/Energy Crane hydraulic or hydrostatic pump repaired model, HMF135 ,serial number 2950014 ,a complete American Aero/Energy Crane hydrostatic part or hydraulic part model number, HMF135B10NDDDXAX2X ,is used as the main hydraulic transmission or complete hydrostatic drive pump repaired on a OM2200 or EC1100 American Aero/ Energy crane and is remanufactured back to OEM specifications using American Aero/Energy Crane parts, each American Aero/Energy Crane Hydrostatic pump repaired is calibrated and tested, to like new performance for all American Aero/Energy Crane hydrostatic or hydraulic transmissions, pump repaireds, hydrostatic drives or American Aero/Energy Crane hydrostatic equipment, these remanufactured American Aero/Energy Crane...

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