MindMap Gallery Ball valve design planning
Three ball valve design drawings, drawing proofreading, drawing review precautions
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Ball valve design drawing planning
Material specifications
Casting purchasing specifications
Forging procurement specifications
Non-metallic material procurement specifications
Sphere Valve Seat Purchasing Specifications
Valve stem purchasing specifications
Craftsmanship
Special process specifications
ENP
Ball/valve seat 0.5~0.7mm
Fixed shaft/fixed plate/stuffing box 0.2~0.3mm
Hardness/bonding strength
STL
Cold spray
hot spray
Hardness/thickness/bonding strength
WC/CrC
Cold spray
Hardness/bonding strength/thickness
Ni55/Ni60
Heat treatment process specifications
Normal working conditions
Oil, gas and water
Special working conditions
high temperature
600 degree water vapor (F91/F22/F92)
538 degree chlorosilane (800H)
Ultra-low temperature
-196 degrees (F316/F304, rod XM-19)
-101 degrees (F316/F304, rod 17-4PH)
corrosion
acid
H2S
NACE
sulfuric acid
concentration
temperature
Nitric acid
H
acetic acid
Zirconium material
titanium
Hastelloy
base
NaOH
F316
Monel
KOH
marine climate
electrochemical reaction
Cold working process specifications
car
Milling
Drill
grind
Craft workwear
Lathe tooling
Milling machine tooling
Drilling tooling
Grinding machine tooling
The main parts
Valve body/bonnet
Soft seal/hard seal internal parts have the same size
Stem
Hard seal/ultra-low temperature consistent dimensions
The valve stem material is 17-4PH/Inconel 718 (Inconel 660)
Ball/Seat
The soft and hard sealing spheres have the same size (planned according to F316)
The soft and hard sealing valve seats occupy the same space and position
Materials are designed based on F316
Bolts and nuts
B7/2H
B8/8
A320 B8 CL2/A194 8
Universal parts
Valve stem
filler
One valve stem corresponds to one specification
stuffing pad
Available/dispensable
Anti-return pad
Same size
Material variable
Packing gland
Consistent bolt size (below 600Lb)
Stem size consistent
Positioning pieces
Positioning form
Positioning structure
handle
structure
length
seal
Wound gasket
size (ending in 0 and 5)
Material 316 Flexible Graphite (replacing 304 Flexible Graphite)
O-ring/O-ring groove
O-ring specifications
O-ring hardness
O-ring compression/tension
Graphite sealing ring
Same caliber and same size (below 600Lb)
spring
butterfly spring
Standard Parts
Same caliber and same size
Cylindrical spring
Preload spring (5 specifications)
The spatial position of the ball/valve seat is consistent
Casting and forging interchange
Universal gadgets
Universal O-ring
Bracket
Upper connecting plate (ISO 5211)
Lower connecting plate (ISO 5211)
Height (8 specifications)
Connecting sleeve
Connected to the actuator (standard option)
Stem connection (square connection)
Stuffing box/fixed shaft
Common dimensions for castings and forgings
Material A105 ENP (F316)
mark
Dimensional tolerance
Basic hole system (large hole)
Basic shaft system (small shaft)
Position tolerance
Concentricity
Verticality
Symmetry
Parallelism
Assembly tolerance
Small assembly of ball valve seat
Stem verticality
Roughness
Sealing position
Matching size
skills requirement
Assembly drawing
design annotation
Inspection standards
Connection size
Torque
Parts drawing
Mechanical behavior
common enquiries
heat treatment
Ball/Seat
Sealing surface
heat treatment
Technical conditions
Stem
Forging grade
heat treatment
Case hardening
filler
seal
Amount of compression
common enquiries