Valtec Controls Hi-Performance Ball Valves,Actuator, Control valves ,Valve automation,Three way ball Valves, Electrical actuator, Pnuematic actuator, Spl valves for customers

VALTEC Hi- Performance Ball valve :
Is a general purpose soft seated three piece sandwich pattern valve. It promises high performance over a wide range of service conditions.

Design Feature :

“Valtec “ Hi- Performance ball valves are reduced bore valves of three piece sandwich Construction with two body connectors are available in screwed or socket weld ends. The body of the valve fits between the connectors. It contains the ball, PTFE body connectors seal and stem assembly. The corrosion resistant ball is held between the body connector bolting. This ensures leak tight shut- off in both directions under pressure or vacuum conditions.The stem assembly in corporate an anti-blow-out stem inserted from inside the body. The seal is effected by spring discs loading a PTFE stem seal positioned between shoulders on the stem and the body. The stem engages in a slot in the ball and so allows the ball to float under pressure. The result leak tight shut off over the full operational range. The use of PTFE (POLYTETRA FLUORO ETHYLENE) for all sealing member results in a low torque values suitable for a wide vanity of services and conditions. This is because of PTFE is an extremely inert materials with a very low co-efficient of friction.

Manufacturing Standards:

The Products generally confirm to the requirements of BS: 5351, British Standard Petrochemical and allied industries.

Methods of Operations:

The valves are supplied complete with fitted wrench. Which indicates if the valves is OPEN or CLOSED. The bail port is in line with the wrench. Valtec Hi-Performance directions unless specified otherwise.

Catalogue number/Maximum cold working Pressure ( CWP )

Body of SS304	Body of SS316	Body of Carbon Steel	End Connection	Max CWP Psig
44R22PBP	44R33PBP	44R12PBP	Screwed BSP(F)	1000
44R22PSW	44R33PBP	44R12PSW	Socket Weld	1000
44R22P15	44R33P15	44R12P15	Flanged CL 150	275

Test Pressure

All Valtec Hi- Performance Ball Valves are subjected to the following pressure tests as standard. For specific requirements, Please contact Factory.

Type of Test	Test Pressure	CL 150
Body (Hydrostatic)	1500PSIG	450
Seat (Hydrostatic)	750 PSIG	275
Seat (AIR)	80PSIG	80

Valtecc Hi-Performance Ball Valves quality to ANSI B 16 104 CLASS VI Leakage as standard.

TORQUE DATA

The actual turning effort required to operate a valve will vary with service conditions and such factors as length of time in service. The figures given below are intended to assist actuator sizing and contain a safety factor adequate for normal operating conditions. For specific services consult factory.

Valve mm	15	20	25	32	40	50	80	100
Size Inch	½	¾	1	11/4	11/4	2	3	4
Actuator Sizing Torque (Nm)	3	4	6	12	15	22	108	168

TECHNICAL DATA:

VALVE RATINGS :

The Pressure and temperature rating for soft seated ball valves are dependent on the materials used for the body seat rings and seals. General temperature of service not to exceed 180⁰C (Due to the Temperature pressure capabilities of PTFE) N.B carbo steel valves are suitable for temperatures down to-30⁰C and stainless steel valves down to 50⁰C.

Material of Construction:

1	Body and Body Connectors
	a. Carbon Steel Forgings/Castings/Rods	ASTMA- 105/WCB/EN8/IS1875 CL II
	b. Stainless Steel Forgings/ Castings/ Rods	ASTMA-351 GR CF8/CF8M AISI SS 304/SS316/HASTELLOY C/MONEL/ALLOY 20
2.	Ball Stainless Steel Castings/ Rods	ASTMA-351 GR CF8/CF8M/AISI SS 304/SS 316
3.	Stem & Gland	Stainless steel to AISI 304/316
4.	Body Seat Rings and Body connector Seals	PTFE
5.	Stem, Seal and Gland Packing	Carbon filled PTFE
6.	Gland Nut and Wrench Nut	Carbon Steel Plated Ni/cr
7.	Body Connector Boiling	IS 1367 GR 8 Bolts and Gr 8.8 Nuts
8.	Wrench	Mild Steel Epoxy powder Coated
9.	Identifications Plates	Aluminium

SALIENT FEATURES OF VALTEC BALL VALVES

Valtech HI-Performance ball valves are manufactured as per BS-5351 the British Standard for ball valves for petroleum, petrochemical and Allied Industries. The British Standard is adopted by international manufacturers for uniformity in design and manufacture of ball valves in industry.

BODY :
British Standard 5351 – insists upon minimum shell wall thickness of castings to ensure safety to the working personnel in handling hazardous chemicals/acids. We give below the shell thickness as given in Bs-5351 and followed by us stringently

SIZE	20	25	40	50	65	80	100
SHELL THICKNESS IN MM(CLASS 150)	4.0	5.0	6.0	7.0	7.0	7.0	8.0

Body configuration are designed to combine strength and compactness. The Valtec design facilities usage of castings, forgings and rolled stock for cost advantage of customers without any compromise in quality. All the Body material of carbon Steel and Stainless Steel Steel (304 and 316) are inspected before processing for manufacture.

BALL:
A smooth finished and truly spherical SS304/SS316 ball forms the Heart of the design along with the special PTFE seat. PTFE seat. PTFE Seals by gripping the minute surface contours of the ball Any Irregularity or absence of concentricity leads to excessive wear and tear. We maintain accuracy for high performance with our strict quality control processes and special machining gauges.

We do not use AISI 410 or 13% Chromium Stainless Steel material for balls. Such inferior grade of stainless steel materials are prone to pitting corrosion and the PTFE tends to grip the ball surface much more than necessary. This leads to increase in torque and increased wear. We do to reduce cost resorting to such improper and negligent designs. Experienced pipe line consultants, maintenance engineers, and reputed ball valve manufacturers across the world use and recommend only SS 304/316 as trim for soft seated ball valves.

SEAT:
The properties of low frictional PTFE seats are further enhanced by design to ensure positive shutoff. Low torque of operation and absence of wear. Periodic maintenance and lubrication are not required as PTFE seats possess self-lubricant characteristics. A special “Lip- Seat” design ensures retention of seal for many thousands cycles in handling oil, air, Chemicals, gas, acids, alkali, oxygen, instrument isolation, freon, vacuum and many other services.

Valve seats and seals are manufactured by moulding process. This process ensures minimum opening of pores and reduced frictional contact. Secondly wear is eliminated and valve life is enhanced. The seats are provided with designed slots to facilitate down stream sealing. The floating ball is forced under pressure by the line fluid itself to effect and maintain a seal against the down stream seat. By this design the frictional contact is reduced by half and hence the torque of the valve is reduced by almost half compared to other similar valves.

STEM :
We have “Triple tire sealing arrangement across the stem to prevent any leakage. “the Primary seal between body and stem is effected by a PTFE “O” Ring, Secondly, Carbon Filled gland packing and stainless steel gland material provide functions of flexibility and rigidity at the top of the stem to prevent any leakage across the stem length. Thirdly, the two Belleville spring washers live load and stem and adjust for any wear or expansion and contraction due to temperature fluctuations. A slit nut at the top prevent unnecessary movement of sealing rings and completely eliminates gland leakage problems associated with rising stem gate/globe valves.

CHOICE OF END CONNECTIONS

We offer Screwed, Socket Weld, Flanged Ends to ASA Class 150, ASA Class 300, British Standards, Bs10 Table ‘D’’E’’F’ drillings and Din Standard Drillings as option. Arrangement for Dairy/ Pharma applications is also offered on end connection. Extended socket weld end and other minor design changes are also custom built to meet customer requirement at timely deliveries.

Valtec ball valve signifies Hi-performance and reliability at economical prices.