Needle Valves

Stainless Steel Needle Valves

FEATURES

  • Available in SS316, all wetted parts in accordance with NACE MR01-75
  • Heat Code Traceable to certified material test report
  • Low operating torques
  • Bar stock Body in Straight Patterns
  • Anti Blow-out stem, Variety of stem tips
  • PTFE packing standard
  • Flow coefficient (Cv) From 0.35 to 1.8
  • Orifice size : 0.156" (4.0 mm), 0.250" (6.4mm), 0.375" (9.5mm)
  • Variety of end configuration includes SEALEXCEL® Well-Lok™ Tube Fittings, Male / Female NPT, BSPT, BSPP pipe and tube socket weld connections
  • Every valve is factory tested.

No. Description Features and Benefits
1. Anti Blow-out Stem i) Rolled and plated stem threads for excellent Stem performance & extended service life. II) Non Rotating self centering stem tip for superior & repeatable perfect sealing. III) Burnished stem at packing area to ensure low torque operation of the valve & reduction in packing wear.
2. Stem Tip Burnished to achieve high grade surface finish and work hardness for excellence performance and extended service life
3. Packing Bolt Allows packing adjustment in open or close position.
4. Packing Packing below the threads protects the flow stream from lubricant contamination on the threads or wash out and also protect the stem threads from potential damaging effects of the media.
  5.   Locking Pin   To prevent accidental loosening / disassembly of valve.
6. Bonnet Lock Nut For safety to prevent accidental loosening of packing bolt

OPERATING PARAMETERS

  • Pressure Rating : upto 6000 psig (408 bar) at CWP
  • Temperature Rating :
    • -54ºC to 232ºC with standard PTFE packing
    • upto 426ºC with optional Graphite packing

APPLICATIONS

  • General Plant Service
  • Instrument Isolation
  • Hydraulic and Pneumatic
  • Pressure measurement devices
  • Venting

MATERIAL OF CONSTRUCTIONS

  Sr. No.   Part Description   Material
1. Bar Handle SS316
2. Screw SS316
3. Stem SS316
4. Stem Tip SS316
5. Packing Bolt SS316
6. Bonnet SS316
7. Bonnet Lock Nut SS316
8. Packing PTFE
9. Packing Support GFT
10. Washer SS316
11. Bonnet Safety Pin SS316
12. Valve Body SS316
13. Dust Cap PVC

STEM TYPE :

SEALEXCEL® Needle Valves are available with choice of optional stem to provide greater flexibility.
NON-ROTATING (NR) : It is Standard self centering non rotating stem tip typically used in high cycle application to extend the valve life.
V-STEM (VS) : It is used for general purpose liquid and gases.
SOFT SEAT (SS) : A soft seat stem requires a lower sealing torque, It is replaceable and suitable for temperature upto 120ºC
REGULATING STEM (RS) : It is used where some degree of flow control required.

TECHNICAL DATA

The Temperature and Pressure rating for a standard valve with PTFE packing


  Temperature Pressure
psig bar
-54ºC to 38ºC 6000 408
-54ºC to 93ºC 5160 351
-54ºC to 148ºC 4660 317
-54ºC to 204ºC 4280 291
-54ºC to 232ºC 4130 289

TESTING :

  • Standard Test : Each valve is factory tested with nitrogen at 1000 psig (69 bar) for leakage at the seat and packing.
  • Optional Hydrostatic test : This test is performed with de-ionised water at 1.5 time the working pressure.

TABLE OF DIMENSIONS

End Connections     Orifice     Cv Dimensions (mm)   Ordering Number
  Inlet   Outlet A B E F H Straight J
1/4" Well-Lok 1/4" Well-Lok 4.0 0.35 62.0 31.0 12.7 52.5 73.0 - BS03-TT4
3/8" Well-Lok 3/8" Well-Lok 6.4 0.86 73.0 36.5 14.3 63.5 88.0 - BS03-TT6
1/2" Well-Lok 1/2" Well-Lok 6.4 0.86 77.8 38.9 14.3 63.5 88.0 - BS03-TT8
3/4" Well-Lok 3/4" Well-Lok 11.0 2.2 100.0 50.0 15.9 69.9 114.0 - BS03-TT12
6mm Well-Lok 6mm Well-Lok 4.0 0.35 62.0 31.0 12.7 52.5 73.0 - BS03-TT6M
8mm Well-Lok 8mm Well-Lok 4.0 0.35 62.0 31.0 12.7 52.5 73.0 - BS03-TT8M
10mm Well-Lok 10mm Well-Lok 6.4 0.86 73.0 36.5 14.3 63.5 88.0 - BS03-TT10M
12mm Well-Lok 12mm Well-Lok 6.4 0.86 77.8 38.9 14.3 63.5 88.0 - BS03-TT12M
1/8" Female NPT 1/8" Female NPT 4.0 0.35 50.8 25.4 12.7 47.6 73.0 - BS03-FF2N
1/4" Female NPT 1/4" Female NPT 4.0 0.35 57.2 28.6 12.7 52.5 73.0 - BS03-FF4N
3/8" Female NPT 3/8" Female NPT 6.4 0.86 60.4 30.2 14.3 63.5 88.0 - BS03-FF6N
1/2" Female NPT 1/2" Female NPT 11.0 2.2 79.4 39.7 15.9 69.9 113.0 - BS03-FF8N
3/4" Female NPT 3/4" Female NPT 11.0 2.2 79.4 39.7 17.5 69.9 115.0 - BS03-FF12N
1" Female NPT 1" Female NPT 11.0 2.2 92.0 46.0 22.5 69.9 122.0 - BS03-FF16N
1/4" Male NPT 1/4" Male NPT 4.0 0.35 57.2 28.6 12.7 52.5 73.0 - BS03-MM4N
1/4" Male NPT 1/4" Female NPT 4.0 0.35 57.2 28.6 12.7 52.5 73.0 - BS03-MF4N
1/2"Male NPT 1/2" Female NPT 11.0 2.2 79.4 39.7 15.9 69.9 113.0 - BS03-MF8N
3/4" Male NPT 3/4" Female NPT 11.0 2.2 79.4 39.7 17.5 69.9 115.0 - BS03-MF12N
1" Male NPT 1" Female NPT 11.0 2.2 92.0 46.0 22.5 69.9 122.0 - BS03-MF16N
1/4 " TSW 1/4 " TSW 4.0 0.35 46.0 23.0 12.7 52.5 73.0 7.2 BS03-TSW4
3/8" TSW 3/8" TSW 6.4 0.86 57.2 28.6 14.3 63.5 88.0 8.0 BS03-TSW6
1/2" TSW 1/2" TSW 6.4 0.86 57.2 28.6 14.3 63.5 88.0 9.6- BS03-TSW8
3/4" TSW 3/4" TSW 11.0 2.2 79.4 39.7 15.9 69.9 113.0 11.1 BS03-TSW12

Dimensions shown with SEALEXCEL® Well-Lok™ Nut are finger tight
Dimensions are for reference only and subject to change without notice


FAQs

A needle valve is used to regulate the flow of a substance. The flow can be either gas or water through an application or a system. Seal Excel is one of the best needle valves manufacturers in India. We have an extensive range of Needle valves.

The needle valve can be operated automatically or manually. For manual use, one requires a handwheel to control the distance between plunger and valve. Seal Excel is the finest needle valve manufacturer. We bring to you a thoughtful range of quality needle valves.

No, the needle valve does not reduce the pressure; they control the flow and protect the gauges. It removes the chances of potential damages caused due to a sudden surge in pressure.

The handle of the needle valve is connected to the plunger. When you turn the handle of the valve the plunger moves up or down depending upon the threads. As the plunger moves down the tapered point end comes in contact with the valve and fully seals it.