Size

The inside diameter of the hoses must be adequate to keep pressure loss to a minimum and avoid damage to the hose arising as a result of heat generation or excessive turbulence.

Hoses Outside Diameter can be a critical factor when hoses routing clamps are used or hoses are routed through bulk heads.

Temperature

Both fluid and ambient temperature must be considered while selecting a replacement assembly. The hoses selected must be capable to withstand minimum and maximum temperature of system. While selecting hoses for its maximum temperature, care should be taken that temperature stated is not an intermittent value.

Applications

Determine where or how the replacement hose or assembly is used.

• Equipment Type: Most often only a duplicate of the original hose will have to be made. Make sure all the requirements of the applications are fulfilled. While selecting a hose, its application should be considered I.e. Static / Moving / Flexing.
• Working Pressure: The working pressure or operating pressure is one fourth of the hose minimum burst pressure
• Pressure Surges: In hydraulic systems, where pressure surges are severe, increase the safety factor when selecting the proper hoses (safety factor working / burst = 1/5) Conversely, in systems where pressure surges are slight or non-existent, the normal safety factor must be chosen.
• Environmental Conditions: Care must be taken to ensure that the hoses and fittings are either compatible with or protected from the environment to which they are exposed. Environmental conditions including but not limited to ultraviolet heat, ozone, moisture, water, salt water, chemicals and air pollutants can cause degradation and premature failure and therefore must be considered.
• Mechanical Load: External forces can significantly reduce hoses life. Mechanical loads which must be considered include excessive flexing, twist, kinking, tensile or side loads, bend radius vibration. Use of swivel type fittings or adaptors may be required to ensure no twist is put into the hoses. Unusual applications may require special testing prior to hose selection.
• Hose Construction: Various applications may require different hoses construction.

Fluid to be conveyed

Hoses selection must assure compatibility of the hoses tube, cover, reinforcement and fittings with the fluid use.

Pressure:

The system pressure should not exceed the mentioned working pressures. Pressure spikes greater than the mentioned working pressure will shorten hoses life. It is not recommended to use hoses on such applications.

• Pressure Drop: When pressurized media is flowing through the hose, there is a certain amount of pressure difference between intake and outlet points, this pressure difference is known as a; Pressure Drop. This is due to gradual decrease in the pressure of the media along the length. This aspect shall be considered while designing hoses

Type of End Fittings

Care must be taken to ensure proper compatibility exists between the hoses and the end fittings.

valves are used in Hydraulic systems as very high pressure hydraulic fluid to perform various functions. Huge amounts of energy can be transferred over short distances much more efficiently with hydraulic systems than with electrical systems, especially when the desired motion is linear instead of rotational. A basic hydraulic system will have a pump, a pressure control valve, one or more control valves, one or more pistons or hydraulic motors that transfer the hydraulic power into motion and a return system that collects the low-pressure hydraulic fluid and feeds it back to the pump for re-use. See an illustration of this system in

VE-LOCK Needle Valve is 100% tested with nitrogen gas at 1200psig (80 Bar) for leakage at seal & seal. Hydrostatic test performed with pure water at 1 1/2 times of the working pressure. Other optional tests like helium and temperature are available upon request.

VE-LOCK Manufactures High Pressure Hydraulic Valves which is utilize to control Fluid Power & Motion in Piping Systems Hydraulic Valves are mainly in to various Types Like , Check valves , Ball Valves , Flow control valves , Needle valves & Manifold Valves. Hydraulic Valves can be use for High Working Pressure up to 10,000 psi ( 700 BAR). Hyraulic Valves are designed as per DIN /IS / SAE Standards as per its respective application in the Piping Systems.

Needle valves are small valves used for flow control in liquid or gas services.The fine threading of the stem and the large seat area allow for precise resistance to flow.

Needle valves have a slende, tapered point at the end of the vlave stem that is lowered through the seat to restrict or block flow. Fluid flowing through the valve turns 90 degrees and passes through an orifice that is the seat for a rod with a cone shaped tip. These small valves are widely used to accurately regulate the flow of liquids and gases at low flow rates. The fine threading of the stem and the large seat area allow for precise resistance to flow. Needle valves are used to control flow into delicate guages,which might be damaged by sudden surges of fluid under pressure. Needle valves are also used in situations where the flow must be gradually brought to a halt,and at other points where precise adjustments of flow are necessary or where a small flow rate is desired. They can be used as both on/off valves and for throttling services.

Needle valves are often designed with a metal needle valve (generally brass,bronze,or stainless or other alloys of steel) and an elastomeric seat (generally PVC,CPVC,PTFE,or a wide range of brand name plastics and thermoplastics. ) While this is the most common form,valves are available that have metal - metal,plastic - plastic,or plastic- metal needles and seats. These variations are usually designed with specific applications in mind, especially situations where corrosion,high or low temperatures or extensive wear are possible. In such cases,it is best to consult with the manufacturer ti find which type of valve is best for the application at hand

Needle valves are used in almost every industry in an incredibly wide range of applications - anywhere control or ,etering of steam,air,gas,oil,water or other non - viscous liquids is required. They can be found in every industry from aerospace to zoological science,every service from gas and liquid dispensation to instrumentation control cooling to power generation. However,needle valves should be avoided in applications where the media is viscous,or in the dispensation of slurries.The small flow orifice can easily trap thick materials or solids and become blocked.

Needle valves are widely used for severe service operation as regulating and shut - off valves in many critical high pressure as well as vacuum application on fluid line connections like Natural gas lines,Gas sampling lines Test benches,Control panels,Instrument Air lines Hydraulic power systems Flow meters,manifolds Drain,Vents, Pressure gaugesand Transmitters Etc.

Design Features

1. Pressure up to 6000psi (412)bar.
2. Temperature from 70T (21"C) to 450T / 232 0 C / with standard TFE packing and up to 1200 0 F with optional Grafoil packing.
3. Orifice size of 0.156" (3.962) to 0.437" (11.0998).
4. Choice of soft seat,V and ball Tip stem design.
5. Straight and angle pattern.
6. Many combinations of end connections.
7. Full raw material traceability,Testing & Identification.

MINIATURE TYPE - FORGED MALE x FEMALE END	MINIATURE TYPE SCREWED END	MINIATURE TYPE ANGLE END	INTEGRAL BONNET MALE x FEMALE END

SCREWED BONNET OD x OD END	UNION BONNET TYPE SCREWED END	ROUND BODY MALE x FEMALE END'	TUBE OD TYPE METRIC / INCH OD

SOLID BAR STOCK GENERAL PURPOSE	GENERAL PURPOSE SCREW END	BLOCK & BLEED MALE x FEMALE END

Standard Testings

VE-LOCK Needle Valve is 100% tested with nitrogen gas at 1200psig (80 Bar) for leakage at seal & seal. Hydrostatic test performed with pure water at 1 1/2 times of the working pressure. Other optional tests like helium and temperature are available upon request.

Ball valves are quarter - turn, straight through flow valves that have a round closure element with matching rounded seats that permit uniform sealing stress. Ball valves are used in situations where tight shut - off is required. The type of seat can vary with the valve pressure rating and material of construction.Some valve seats are composed of single molded forms,while other seats with higher - pressure rating often incorporate a trunnion design where each face of the ball is separately sealed. They are wide duty valves,able to transfer gases,liquids and liquids with suspended solids (slurries).

In general,ball valves offer many advantages when contrasted with other valve types.They provided superior ease of operation and can maintain and regulate high volume,high pressure and high temperature flow. Most common ball value offer rugged construction providing for a long service life,and a comparably low cost.Additionally,the design of the regulating element allows the valve to function without the complication of side loads,typical of butterfly or glode valves and the valve design permits inspection and repair of seats and seals without removing the valves' body from the line.

Ball vlaves are available in a variety of body styles,including one - piece, two - piece,three - piece and flanged body construction.
Each of these ball valve forms offers specific advantages depending upon the requirements of the given application.Similarly, they are designed using a wide varriety of materials,as required by their application. Common ball valve materials include brass, bronze,copper,castiron,ductile iron,stainless and other steel types,metal alloys and plastics including PVC and CPVC. It is best on consult with the manufacturer for the specific properties of the materials used in the valve,and how this relates to the application that include type,concentration and temperaturer of the media being handled.

VE-LOCK Ball Valves is 100% tested with nitrogen gas at 1200psig (80 Bar) for leakage at seal & seal. Hydrostatic test performed with pure water at 1 1/2 times of the working pressure. Other optional tests like helium and temperature are available upon request.

ANGLE BALL VALVE FEMALE x FEMALE END	BALL VALVE SCREWED END	GENERAL PURPOSE SCREWED END	GENERAL PURPOSE SCREWED END

3 WAY BALL VALVE OSCREWED END	FLANGED END SOCKET WELD TYPE	FLANGED END TUBE OD TYPE	SOLID HEX BAR LOW COST VALVE

ROUND FLANGED END NB SIZES

Check valves are self - activating safety valves that permit gases and liquids to flow in only one direction,preventing process flow from reversing. They are classified as one - way directional valves. Fluid flow in the desired direction opens the valve, while backflow forces the valve closed. The mechanics of check valve operation are relatively simple.Most check valves contain a ball that sits freely above the seat,which has only one through hole. The ball has a slightly larger diameter than of the through hole. When the pressure behind the seat exceeds that above the ball,liquid is allowed to flow through the valve;however ,once the pressure above the ball exceeds the pressure below the seat,the ball returns to rest in the seat,forming a seal that prevents backflow.

Check valves use a variety of technologies to allows and stop the flow of liquids and gases.Single - disc swing valves are designed with the closure element attached to the top of the cap. Double - disc or wafer check - valves consist of two half - circle disks hinged together that fold together upon positive flow and retract to a full - circle to close against reverse flow. Lift check valves feature a guided disc. Spring - loaded devices can be mounted vertically or horizontally.Silent or center guide valves are similar to lift check valves,with a center guide extending from inlet to outlet ports. The valve stopper is spring and bushing actuatedto keep the movement "quite". Ball check valves use a free floating or spring loaded ball resting in a seat ring as the closure element. Cone check valves use a free floating or spring loaded cone resting in the seat ring as the closure element.

Selecting check valves requires an analysis of performance specifications,materials of construction,connection types, and media.Performance specifications include valve size,pressure rating,media temperature,and valve flow coefficient. Most check valves are made of acetal polymers,aluminum,brass,bronze,cast iron,chlorinated polyvinyl chloride (CPC), ductile iron,copper,polyethylene(PE),polypropylene (PP),polytetrafluoroet (PTFE),polyvinyl chloride (PVC),polyvinylidene fluoride (PVDF), rubber steel,or stainless steel.Connections for check valves can use threads,compression fittings,tube fittings,bolt flanges,clamp flanges,butt welds,socket welds,and union connections.In terms of media,check valves are rated for air,compressed air water ,hot water , cold water,potable water,salt water,wastewater,gasoline,diesel fule,high- purity gas,liquefied petroleum gas (LPG) natural gas,sour gas,corrosive gas,abrasive material,acids,corrosive chemicals, adhesives, concrete,grout,coolants,hazardous materials,high viscosity fluids,hydraulic fluids,liquid metal,lubricants,oil, powders,solids,rendering wastes,sludge,slurry,ash slurry , or steam.

VE-LOCK Check Valves is 100% tested with nitrogen gas at 1200psig (80 Bar) for leakage at seal & seal. Hydrostatic test performed with pure water at 1 1/2 times of the working pressure. Other optional tests like helium and temperature are available upon request.

CHECK VALVE - SCREWED END -SINGLE PIECE	CHECK VALVE - TUBE OD END	CHECK VALVE - SCREWED END -TWO PIECE	INSTRUMENTATION CHECK VALVES -TYPES

CHECK VALVE - SCREWED END - RHDI	CHECK VALVE - TUBE OD END -RHD	CHECK VALVE - TUBE OD x MALE - RHZ-R -ED	CHECK VALVE - TUBE OD x MALE - RHV-R -ED

Technical Selection

• NPT & SAE Connections
• Carbon Steel With Black Oxide Plating
• Set Screw Allows Knob to be Locked into Position
• Graduated Knob & Spindle for Accurate Flow Control
• 7 PSI Standard Spring Setting
• Buna O-Ring/PTFE Stem Packing
• Temperature Range - 4° F to + 176° F

VE-LOCK Flow Control Valves is 100% tested with nitrogen gas at 1200psig (80 Bar) for leakage at seal & seal. Hydrostatic test performed with pure water at 1 1/2 times of the working pressure. Other optional tests like helium and temperature are available upon request.

FLOW CONTROL VALVE (WITH NRV)	MTHROTTLE VALVE (WITH OUT NRV)

Design Features

• Forged one piece body construction for higher strength.
• Two isolation and one equalizing valve for instrument balancing applications.
• Metal to metal body bonnet seal for higher pressure and temperature sealing.
• Temperature rating - 50° C To 230° C.
• Mounting holes are standard to allow easy fixing to pipe stands and enclosure.
• Non rotating Vee/ Ball tip design.
• Full material traceability.
• Material of construction can be supplied to meet the requirement of NACE MR - 01 -75

VE-LOCK Manifold Valves is 100% tested with nitrogen gas at 1200psig (80 Bar) for leakage at seal & seal. Hydrostatic test performed with pure water at 1 1/2 times of the working pressure. Other optional tests like helium and temperature are available upon request.