Wellhead Bleed Valve: API 6A - with Optional Gauge Valve - 30,000 psi (2070 bar)

 Principle of Operation

Parker Autoclave Engineers Wellhead Gauge valve was designed using the API Type III connection (9/16” HP) and materials suitable for use in NACE (SOG) defined corrosive applications. The 9/16” HP connection - designed for non-NACE 30,000 psi application, when used with Annealed 316 SS instead of our standard cold worked 316 SS, is suitable to 20,000 psi MAWP. Standard Material Medium Pressure connections hold MAWP to 20,000 psi.
The 30GV is a single block valve with one inlet and 3 shared outlet connections. A separate Bleed Valve (20BV or 30BV) optioned with the same 9/16” HP Male connection as explained above, can be used in any of these ports to provide the bleed function if required. The other ports can be used with Pressure Gauge (PAE H-Style) and/or Pressure or Temperature Transmitter.
Bleed/Vent Valve can also be used to evacuate trapped air from pressure systems up to 30,000 psi (2070 bar)

Ordering Guide

Catalog number is created based on customer selection of product parameters, see below for example.

A - Valve Series
20GV Wellhead Gauge Valve
30GV Wellhead Gauge Valve

B - Tube Connection
M4: SF250CX (1/4" MP)
M6: SF375CX (3/8" MP)
M9: SF562CX20 (9/16" MP)
M12: SF750CX (3/4" MP)
H9: F562C (9/16" HP) (API Type III connection)

B - Outside Diameter Tube Size
4: 1/4
6: 3/8
9: 9/16

C - Stem Type
00: One Piece Vee Stem
07: Non-Rotating Vee Stem

D - Body Pattern
8: 4 Ports, 1 Inlet, 3 Outlets

C - Stem Type
00: One Piece Vee Stem

D - Body Pattern
2: Angle (bottom inlet)

E - Options Material
*SOG: NACE Material, Hardness Verification/Certificate
***HC: UNS N10276 Hastelloy C276, Wetted Materials (Annealed)
***IN625: UNS N06625 Inconel 625 Wetted Materials (Annealed)
***2507: UNS 32750, 2507 Super Duplex Wetted Materials (Annealed)

Notes:
316 SS valve bodies are cold worked and not suitable for use in NACE (ISO 15156)
applications. If required, contact factory for options.
* SOG suffix also changes CW 316 SS Body material to Annealed 316 SS suitable
for NACE service, Pressure reduction of 60% possible
*** Special Materials often have reduced MAWP ratings, see Technical brochure for
assistance and for additional material options

For more details see tha full PDF table here

Wellhead Gauge Features

• One inlet, three outlet of same size and type
• Metal-to-metal bubble tight shut-off
• PTFE packing below stem threads provides dependable sealing
• UNS S31600 cold worked 316 SS as standard
• (optional annealed materials available)

Bleed Valve Features

• One piece hex body construction allows easy installation
• Vent port tapped 1/8" NPT for plumbing to safe area
• Tee handle for easy operation
•  Positive blow out prevention on stem
•  “Adapter Male” * One Piece Male Medium or High Pressure connection, sized as required
• *Adapter Male connection is made to include the matching gland thread as well as the collar spacing and the typical tubing cone tip to form a one-piece connection.

Warning: Vent Outlet position is not controllable once torqued or damage will occur.

Valve Packing Options

Standard Parker Autoclave Engineers valves with PTFE packing may be operated to 450°F (232°C).
For additional temperatures, see options below and include suffix code in part number of valve selected:

• TG: Standard valve with PTFE-Glass packing -100°F (-73°C) to 600°F (316°C)
• B: Cryogenic trim materials and PTFE packing required when below 0°F (-18°C) to -100°F (-73°C)
• LT: Extended stuffing box valve with PTFE packing and Cryogenic trim materials to -423°F (-252°C)
• GY: Standard valve with Graphite Yarn packing 32°F (0°C) to 800°F (427°C). Used when selecting HT option. Note: 3/4" valve using graphite yarn packing has significant increase in torque needed to actuate valve at pressure. Contact factory with application detail for assistance.
• HT:Extended stuffing box valve with Graphite Yarn packing to 1200°F (650°C)
  (See “Technical Brochure” for Pressure/Temperature effect on temperatures above ambient.)