ZRT develops and produces APT(D/U) series of hydraulic pressure
tester(hereinafter referred to as hydro tester), which are designed
to conduct pressure test for different size, different pressure
level and at different speed to oil tubes, casing pipes, fluid
transportation pipe, line pipes, high pressure boiler tubes, steel
tubes used in nuclear power station etc.
Models: APT(D/U)-X / Y-Z, "APT" stands for automatic pressure
tester, "(D)" for more than one pipe, "/" stands for single pipe,
"U" stands for tester with U shape pipes, "X" stands for the
maximum working pressure, "Y" stands for the smallest outside
diameter of the pipes for the tester, "Z" stands for the biggest
outside diameter of the pipes for the tester.The tested pressure
range is from 5 MPa to 200 MPa. The hydro tester is designed
according to the customer's demands. By the main characteristics,
the available type of hydro tester consists of Single Pipe tester,
Dual (multiple-) Pipes Tester, U Shape Pipe Tester and Coupling
Screw-on Tester. According to tester's structure, the available
type of testers are named as "double screw rods for filling head +
pull rod with loop slot for venting head", "fixed stroke for
filling head + double screw rods for venting head", "fixed stroke
for filling head + balance cylinder for venting head".Clamp is
driven by oil cylinder and has two type 'V' jaws and one moving
plate. If Z/Y≤3, with the change of pipe's size, clamp would adjust
to the pipe size automatically and no need to change anything. If
Z/Y>3, with the change of pipe's size, the two jaws of clamp
should be changed to meet the need. Tester has
four sealing forms, i.e. 'big clearance radial sealing', 'end
sealing', 'big clearance inner expanding sealing', 'small clearance
radial sealing'. Briefly described as following: 1,outside
diameter≤178mm:adopting big clearance radial sealing, test head is
rectangle and is very easy to be changed. 2,178mm559mm: if test
pressure≤30MPa, adopting end sealing; if test pressure>30MPa,
adopting big clearance inner expanding sealing(our patented
products); 4,outside diameter≤45mm: both straight pipe and type U
pipe adopt small clearance radial sealing(our patented
products).Structure of the machine: when the longest pipe length
minus the shortest pipe length≤4000mm, adopt fixed stroke for
filling head + double screw rods for venting head. when the longest
pipe length minus the shortest pipe length>4000mm, adopt the
double screw rods for filling head + pull rod with loop slot for
venting head or fixed stroke for filling head + balance cylinder
for venting head.There are three operation models for the hydro
tester, which includes manual, semi-automatic and automatic, and
three working position, i.e. length measuring and flushing station,
pressure testing station and water draining station. Under
automatic model, the three working stations work at the same time.
The testing data and curve could be saved automatically and then
reports could be generated, printed and saved upon request. Also
the data and curve can be stored into Excel automatically and you
can open it in every computer. /* March 10, 2023 17:59:20
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