Gate Valve

GATE VALVES are the most commonly used as shutoff valves in the industries. Gate valves are used where minimum pressure drop and bi-directional on-off service is required. Gate valves are not recommended for use for throttling service. Prolonged use in the partially open position is likely to damage seating surfaces. Gate valves are available with different wedge configurations to meet the specific service conditions. Normally gate valves are provided with flexible wedges unless otherwise asked for.

Cast Steel
ASTM A 216 Gr WCB, WCC, ASTM A 352 Gr LCB, LCC, LC1, LC2, LC3
Alloy Steel
ASTM A 217 Gr WC1, WC6, WC9, C5, C12, C12A, CA15
Stainless Steel
ASTM A 351 Gr CF8, CF8M, CF3, CF3M, CF8C, CG8M, CG3M, CN7M etc
Duplex stainless steel
ASTM A 351 Gr CD4MCu, CK3MCuN (any other material on customer's request)
Cast Iron
C.I. IS 210 Gr. FG200
Also available in forged steel for below 2 inch size valve.

Vinaora Nivo Slider


Drawing Specification:

P. No.Nomenclature
1 Body
2 Bonnet
3 Wedge
4 Stem
5 Seat rings
7 Backseat bushing
8 Gland
10 Yoke sleeve
11 Stem packing
12 Bonnet gasket
13 Bonnet bolts
14 Bonnet nuts
15 Gland eye bolts & nuts
16 Gland lug bolts & nuts
17 Hand wheel
18 Hand wheel nut


Flexible Wedge/ Solid Wedge/ Split Wedge/ Double disc, Outside Screw & Yoke, Bolted Bonnet Design, Flanged end/Welded end.

Size Range:

ANSI  Class 150:  upto 4"
ANSI  Class 300:  upto 4"
ANSI  Class 600:  upto 4"

Design Standards:

API 600/ API 602

Salient Features:

  • Body and bonnet - Investment Casting with uniform sections, precision machined
  • Body: Straight through port without recesses except in the seat area - Minimum resistance to flow, turbulence and erosion
  • Flex wedge: Guide slots in the wedge engage with integral guide ribs in the body, Stem-to-wedge contact close to wedge centre - Better sealing, smoother operation
  • Seal-welded seat ring - Eliminates leakage path between seat ring and body, does not loosen up due to temperature fluctuations or vibration
  • Stem - One-piece construction with forged T-head - Long service life, smoother operation