1. retop valve repair co., ltd valvesgrinder.com
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IN D EP EN D EN T CH IN ES E N ATION AL IN C REAS E IN COME,
IN TE LLECTUAL PROPERTY IN N OVAT IVE PAT EN TS RED UCE EXP EN D ITURE
Practical Applicability on Safety on Valve High Efficiency of Valve Increase Income Reduce
Valve Repairing Repairing Repairing Expenditure
The ex-service valves that get Best repair solutions would be Multifunctional vertical valve Valves are consumable products for
removed from the production line worked out according to various repairing grinder, combined with enterprises’ production, it will cost
are mainly due to failures caused production environments, valve grinding and fine grinding functions you substantial funding for
by sealing surface corrosion or service mediums, then the most together, it could realize grinding and replacement every year, taking the
large scale chemical company as an
damage of internal parts. appropriate welding electrode to fine grinding of valve sealing surface
example, annual purchase capital on
However, as the metal physical be used, which all will and valve spool which finished bead valves is about US$1,500,000,
stress had been eliminated, and the contribute to the perfect welding, the fitness degree could while our company could set up valve
valve body strength are still in performance of the restored reach 100%, surface roughness 0.4, repairing and restoring system,
solid condition, then the restored valve to deal with the harsh spherical out of roundness degree providing training on maintenance
valves shall not be liable to be production environments, and could reach the processing standard personnel, which would allow you to
deformed, hence, the valve prolong the service life. of special purpose machine tool for repair the old valves for recycling use,
applicability could be improved. sphere processing. hence, it could reduce the cost on
valves by 90%.
COMPANY INTRODUCTION
ReTop Valve Repair Co., Ltd. is the former Zigong Futaishan Machinery Company, which
was founded in 1994 and the first professional valve repair and restoration company in China,
dedicated to professional solutions on valve metal sealing surface repair and valve inspection
aspects. Our technology and products have been in service for national electric, oil and gas,
petrochemical, chemical, siderology, pharmacy, papermaking industries and energy sectors.
With nearly two decades R&D on equipment and repairing services, now the Company had
developed into a diversified company with professional industrial valve repair and restoration
service, and production of valve repair equipment, valve repairing kit as well, having a group
of experienced, well-trained valve inspection, repairing experts and research personnel.
The independent R&D and intellectual property multifunctional vertical valve repair and
grinding machine, valve repairing kit and special grinding head, which break through the ReTop Valve Repair System
bottleneck that one kind of valve repair equipment could only repair for one single type of ReTop valve repair and
valve, it could repair and restore the ball valves, gate restore system is suitable for
valves, stop valves, safety valves, regulating valves, power all kinds of valves with
station valves, desulfuration valves etc. of various types, nominal diameter 0.4“ – 40“
specifications, standards. The restored industrial valve and operating pressure of
could reach various kinds of quality accreditation 0.1MPa – 100MPa,
standards, improving the original valve by 2 grades, inspections and pressure test
could be taken for the
which not only could effectively resolve the tremendous
repaired and restored valves
waste on valve leakage and valve replacement
strictly according to China GB,
expenditures, but also prolong the service life and
US ANSI/API/MSS, Germany
improve the production safety of the valve greatly, hence,
DIN, UK BS, France NF, Japan
it could safeguard the production safety, reduce JIS etc. national standards.
production cost for enterprises.
tel 86-10-8627-5592 • fax 58948640 • email intl@re-top.com • URL www.re-top.com

2. retop valve repair co., ltd valvesgrinder.com
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THE SERIES OF RETOP VALVE REPAIRING EQUIPMENT
ReTop Vertical Valve Repairing Grinder Valve Repair & Restoration Process By grasping the working
condition, contact medium,
ReTop valve repair grinding machine taking the professional valve repair
bearing temperature and cause
as the design concept while the design principle is dynamic balance, by of damage etc. of the valves on the
adopting variable frequency motor as the power source, to process with grid enterprise production lines, perfecting
grinding and fine grinding through infinitely variable speeds, constant repair and restoration solutions shall be
power, constant torque, turbine axial feeding, planet grinding head, it is the worked out with respect to the old valves,
and to proceed with the perfect repair
international leading professional valve repair equipment.
process for the valves by using of ReTop
The remarkable characteristic of this machine tool is that it is integrated vertical valve repairing grinder.
professional valve repair equipment combined with grinding and fine
grinding functions.
The power source of this machine is 5KW variable frequency motor which
is with strong driving power, the metal parts are with strong rigidity and
stable mechanical stabilities, the grinding plate and the grinding head Replaced old valves, dismantling → Cleaning →
matching with precision, running stable, radial grinding force is strong, Select appropriate electrode → Bead welding of
which allow grinding and fine grinding process after bead welding and sealing surface → Grinding by valve repair and
repairing welding of valve seat, spool, wedge disc and sealing ring, grinding machine → Fine grinding by valve
connecting flanges, middle flange, ball valve seat etc. in respect to stop grinding machine → Inspection of sealing
valve, gate valve, ball valve, power station valve, water seal valve, regulating surface → Valve assembling → Pressure rating
valve, safety valve, check valve etc., hence, the sealing performance of the testing with over 30% value of original valve
repaired valve is excellent and exceeding the turning effect, it could be even pressure → Valve surface painting and beautification → Valve Repairing Name Plate →
called as the “Good Doctor” of old and damaged valves. Valve repair and restoration completed successfully → Putting into use again
Taper Grinding
Grinding
By using the special taper grinding head for this grinding machine, it
For sealing surface after bead welding with stainless steel electrode or
cemented carbide electrode, it could process with high strength grinding, could repair and restore taper sealing type valves;
and grinding roughness could reach 0.8;
Boring
Fine Grinding
Fix metacenter bushing on the operating table, it could process for
On the basis of grinding function, to use the integrated design of grinding
and fine grinding functions, it is no need to replace the grinding head, but Φ50-150mm (2'' - 6'') inner bore by using boring tools;
only to adjust the rotary speed, it could process with fine grinding to the
sealing surface, and the fitness degree could reach 100%, radial fitness Milling
100%, surface roughness 0.4; Fix AB carriage (latitudinal, longitudinal) and other working kit, it could
Chamfering process for plane and inclined plane of work piece; further fix
By using the special grinding head for this grinder, it could complete electromagnetic plate and accessories, it could process metal sealing part
chamfering process for the sealing surface after grinding and fine grinding; and other similar parts.
The 1st year Do you know how much could valve repair save for you
The 2nd year
The 3rd year
10%4% As everyone knows valves are of wearing parts, if any leakage occurs, the life of the valve shall be ended.
The 4th year
But, is that really the case? Absolutely NO!
Along with the service of the valve for a certain period, the metal stress would be eliminated, the valve body
Valve repair
shall not be liable for further deformation, while the vast majority cases of the valve leakage are due to
could save
large sum on
25% damage of valve body or valve spool, therefore, as long as repair scheme were scheduled to resolve the valve
62% sealing surface leaking problems pertinent to the specific valve leaking reasons, valves that are of better
business cost
quality than the new produced ones are available.
for enterprises,
The life of metal valve body are generally designed as 5~8 years, which means it could allow one single
you can learn
valve to be repaired for several times, in other words, valve purchase cost shall be reduced greatly through
it easily from
repeated valve repairing!
the pie graph
above.
Design Concept of ReTop Vertical Valve Repairing Grinder
Original 5 year purchasing
expenditures: US$ 1,000,000 Valve repair and grinding machine are designed as double stand column to fit the machine height requirement
for valve repairing, and the working table is wide and thick; transmission device setting as variable frequency
Cost on valve repairing: US$ 300,000 motor infinitely variable speeds, and the drive sleeve and the drive shaft are with bigger diameter, which could
bearing heavy load, and with strong torque, rigidity, and good strength; feeding device is worm wheel driving
You having saved: the rotation axis sleeve thread, axial grinding; grinding mechanism designed with flat grinding, taper grinding
and chamfer grinding, the grinding head could realize revolution and rotation planet type grid grinding,
US$ 700,000 therefore, it is provided with various grinding functions needed for valve repair.
tel 86-10-8627-5592 • fax 58948640 • email intl@re-top.com • URL www.re-top.com

3. retop valve repair co., ltd valvesgrinder.com
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RETOP VALVE REPAIR AND RESTORATION SYSTEM
Overview of ReTop Repair and Restoration System
By use of our independent R&D vertical valve repair and grinding machine, vertical
spherical grinding machine, slant rotary table, universal working knit, professional
grinding head, special clamp, matching up with general machine and pressure test and
inspection device, it could realize bead welding of old valve metal seal surface, fine
machining of new seal surface, fitting of soft sealing surface, valve parts manufacturing,
caliber and adjusting of original irregular geometric dimensions of the valves, repairing
valve defects caused by various factors, and valve assembling and fitting, pressure test
and inspection, painting and delivery, quality feedback, tracking service etc. as well. The
combination application of the above devices and interacting technological process, and
repairing procedures together constructed the valve repair and restoration system (VRS
for short).
The VRS could repair GB, DIN, API, ANSI valves produced by various manufacturers.
With the combination applications of the independent patented valve repair and
grinding machine and universal working kit which are the key component of VRS, it
could complete the repair and restoration of DN50-1000mm valves of various kinds
with high quality, and even could expand to repair of DN1200mm valves by increasing
the VRM machine power rate and fixing special working kit.
RETOP VERTICAL VALVE REPAIRING GRINDER
Advantages of Setting up VRS Parameters RETOP-PM-300 RETOP-PM-500 RETOP-PM-800
by Enterprises 1300 × 1100 × 1300 1300 × 1300 × 1500 1500 × 1400 × 2300
Dimension (mm)
(approx) (approx) (approx)
Large and medium sized chemical,
electric, oil and gas, smelting, paper Weight 900 Kg (approx) 1100 Kg (approx) 1300 Kg (approx)
making, pharmacy industry enterprises Operational Plate 1300 × 1100 1300 × 1300 1500 × 1300
will consume large quantity of Width (mm) (approx) (approx) (approx)
industrial valves, according to statistics
Operational Plate
from Industrial Planning on Coal Height (mm)
800 1000 1200
Industry established by National
Development and Reform Commission, Power of Variable
2.2 Kw 3 Kw 4 Kw
the valve purchase quantity for coal Frequency Motor
industry shall be 7% of the overall Driving Speed Infinitely Veritable Speed Infinitely Veritable Speed Infinitely Veritable Speed
investment amount, while the annual Feeding Apparatus Worm Wheel Worm Wheel Worm Wheel
replacement shall account for over
25%, therefore, as the consumable Grinding after Bead
Yes Yes Yes
Welding
products for production, it costs very
high! Fine Grinding Yes Yes Yes
Axial Fitness 100% 100% 100%
ReTop Valve Repair Co., Ltd. Could
Grinding Roughness 0.8 0.8 0.8
customize a full and complete set of
valve repair and restoration system on Fine Grinding Roughness 0.4 0.4 0.4
the basis of industrial features, Saddle-shaped working kit, Saddle-shaped working Saddle-shaped working kit,
production environment, service gate valve taper block, flat kit, gate valve taper block, gate valve taper block, flat
medium, operating temperature, Accessories grinding head, taper flat grinding head, taper grinding head, taper
bearing pressure etc. factors of the grinding head, chamfer grinding head, chamfer grinding head, chamfer
enterprise client, even by consideration grinding head grinding head grinding head
the actual conditions of each Repair Nominal DN50 - 300 mm DN50 - 500 mm DN50 - 800 mm
production processes, and shall be Diameter 2'' - 12'' 2'' - 20'' 2'' - 32''
responsible for the employee training, Pressure Rating 0.1 - 100 MPa 0.1 - 100 MPa 0.1 - 100 MPa
special device R&D etc., to service you
The flat, angle, taper type The flat, angle, taper type The flat, angle, taper type
on increasing income and decreasing Service Valve Type valve sealing surface of Stop valve sealing surface of valve sealing surface of
expenditures and energy saving and Valve, Gate Valve etc. Stop Valve, Gate Valve etc. Stop Valve, Gate Valve etc.
emission reduction!
380V 50 Hz ( other options can be customized )
RETOP SLANT ROTARY TABLE
The independent R&D slant rotary table is the accessory equipment to match up with the vertical repair and grinding machine for the
processing of slant angle seal surface of wedge gate valve, knife-type valves etc., and its design is more advanced than the slant block
accessories, its model falls into SRT-DN300, SRT-DN500 and SRT-DN800, customized service also available. The body of the wedge gate
valve shall be fixed on the rotary table, grinding operations for the top and bottom seal surfaces; it is no need to turn over the valve body to
complete one-time repair, while the geometric accuracy of the seal surface could be guaranteed, repair efficiency improved.
tel 86-10-8627-5592 • fax 58948640 • email intl@re-top.com • URL www.re-top.com

4. retop valve repair co., ltd valvesgrinder.com
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VALVE MAINTENANCE & RESTORATION EXAMPLE CASE
Wedge Gate Valve Repair Case
1. Fitness of valve plate and valve body is the
key factor to judge the success of valve repair Comparison of Major Valve Repair Equipment
due to the unique slant angle sealing design of
wedge gate valve. Learning from the picture, Item One Germany Brand One Sweden Brand China RETOP
the seal surface of Variable Frequency
the valve body and Power Source General Motor General Motor
Motor
valve plate of the
wedge gate valve Yes, Infinitely
Speed Regulation No No
(DN250 PN64) variable speed
damaged greatly.
Dimensions Small Small Relatively bigger
2. Both the seal
Gate Valve Weight Light Light Heavy
surfaces of the
Without repair
wedge plate and Mobility Easy Easy Difficult
valve body need bead welding, and bead Feeding Device Gear Gear Rack Worm Wheel
welding shall be conducted by suitable model
Grinding after Bead Yes, Infinitely
Gate valve after bead stainless steel electrode No No
Welding variable speed
welding by consideration of
Fine Grinding Yes Yes Yes
the operating
environment, pressure Mounting on the Mounting on the Valve fixing on the
Repair Mode
rating, temperature, valve body valve body operating table
medium etc. of the Other Grinding No No Yes
valve. Yes. One set of
No. Several models, No. Several models,
3. By using of ReTop valve repair and grinding but each model can but each model can equipment can repair
Versatility several different types
Gate valve after repair machine, and the repair single type/ repair single type/
model valve only model valve only of valves
accessory universal
working kit, slant block Price Very High Very High Moderate
tools, grinding and fine Cost Performance Low General Very High
grinding repair
operations were
conducted to the wedge ReTop vertical valve repair and grinding machine is quipped with taper
plate of the wedge gate block for flat seal repairing, which is special used to repair the sealing surface
valve. And the surface of wedge gate valve and valve plate seal surface after bead welding, and the
roughness of the wedge plate could reach 0.4. repairing results for stop valve, regulating valve etc. could be much quicker and
Seal surface of the valve body after repair more efficient if using saddle-shaped working kit.
4. By using of the
grinding machine All parameters will subject to change without prior notice.
and slant block, flat
grinding head,
chamfer grinding
head, grinding and
R E TO P VA LV E R E PA I R C O . LT D .
fine grinding repair operations were made to the GLOBAL MARKETING DEPT.
wedge gate valve body, and the wedge gate valve
body, the roughness of its seal surface reaching 0.4 TEL: ( 86 10 ) 8627 - 5592
after grinding and fine grinding repair operations. FAX: ( 86 10 ) 5894 - 8460
5.The seal surfaces fitness EMAIL: global@re-top.com
of the valve body and
URL: www.valvesgrinder.com
wedge plate after repair
reaching 100%, and there www.re-top.com
is no leakage after pressure
test inspection with 30%
higher than the original
pressure level. It could put
into production line for
service again after painting.
tel 86-10-8627-5592 • fax 58948640 • email intl@re-top.com • URL www.re-top.com