Gate Valve Bolted Bonnet (OS & Y Type)
Gate Valve Bolted Bonnet
Gate valves serves as the ON-OFF application valves as a standard gate valve serves as a bidirectional valve which assists flow in either direction. With the help of wedging action, it serves an effective sealing against the flow. The Valve during full open condition forms a through conduit without any obstruction, this helps in smooth flow and less pressure drop.
Navigare Systems Gate valves are heavy duty, outside screw and yoke type, Bolted bonnet,
rising stem and non-rising handwheel type. The straight through bore design assures minimum turbulence, erosion and resistance to flow. These
valves are handwheel operated and gear operated depending upon the size.
Product Standards
| Specifications | Details |
|---|---|
|
Design Standard |
API 600, API 603, ASME B 16.34, BS 1414 |
|
Pressure/Temperature Chart |
ASME B16.34 |
|
Face to face Dimension |
ASME B16.10 |
|
Testing Standard |
API 598 / BS EN 12266 Part-1 |
|
Flange Details |
ASME B16.5 UP TO 24″
ASME B16.47 26″ and Above
DIN / BS / IS / JIS |
|
Butt-Weld End Details |
ASME B16.25 |
|
Size Range |
2″ – 72″ (DN50 – DN1800) |
|
ASME Class |
Class 150 to 2500 |
|
Materials |
A105 / LF2 / LF3 / F316 / F304 /
F316L / F51 / F55 / F6a / WCB / LCB /
LCC / CF8M / CF8 / CF3M / 4A / 6A / Inconel |
|
Trims |
F6a / F316 / F304 / F316L / F51 /
F55 / Inconel / Stellied or Hardfaced |
|
Ends |
Flange ends, Butt-weld End |
|
Operation |
Manual, Pneumatic / Electric Actuator |
|
Fire Safe |
API 607 / API 6FA / ISO 10497 |
Product Details
- Navigare System Gate valves are heavy duty, outside screw and yoke type, Bolted bonnet, rising stem handwheel type.
- Gate Valve design complies to API 600, API 603, ASME B 16.34, BS 1414
- The straight through bore design assures minimum turbulence, erosion, and resistance to flow.
- Valves are handwheel operated and gear operated depending upon the size.
- Cast body precisely machined with integral flanges and Cast bonnet with integral yoke up to 10”.
- One-piece flexible wedge is standard. Solid wedge shall be provided on request.
- Rising stem with precision ACME thread with single or double start for quick operation.
- Stem packing is designed for optimum control of fugitive emission leakage to the atmosphere
and is assured by the polished finish stem sealing area. - Fugitive Emissions – Complies to API 624 and ISO 15848-1 (<50 ppm / Class AH leakage levels,
optional). - Live loading on packing can be provided as request.
- Back seat shall be either threaded or welded in to facilitate the replacement of packing under line
pressure. - Seat rings are welded in or integral to provide bubble tight joint.
- Two piece gland and gland flange arrangement for reduced stem wear.
- By-Pass, Lantern rings, special connection are as optional.
- Nace service either MR-01-75 or MR-01-03 as required.
- Valves can be supplied with Pneumatic, Hydraulic, or electric actuators and accessories like limit
switch, etc can be provided as optional. - Body gasket leakage <100 ppm observed on eight sizes tested as per API 624 Annexure A.
- Fire Safe – By design and tested to API 607 / ISO 10497.
- CE Marking – Meets requirements of Pressure Equipment Directive 2014/68/EU, Annexure III,
Module H. - Robust stem-wedge design connection successfully tested as per API RP 591 Annex B.
- Hard-faced body guides and wedge slots (sizes >24”).
- Inconel overlay/ cladded options offered.
Special Features
- API 603 Stainless Steel Corrosion-Resistant Gate Valves:
- Integral body seat. In-situ hard-facing provided for Trim 12 and 16 valves
- Flex Wedge – Compensates for seat distortion and eliminates disc-jamming
- Single-piece forged stem with T-head for superior strength
- Body-bonnet Joint – Class 150 Globe Valves offered with square-shaped body-bonnet joints in size 2” and with oval-shaped joints in 3” size. Valves in all other sizes and pressure classes offered with circular body-bonnet joints.
- Complies to API 624 and ISO 15848 fugitive emission requirements
Catalogue & IOM
- Gate Valve Bolted Bonnet (OS & Y Type)
- IOM
Certifications
- API 624
- ETC
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