Təsvir
Technical Datasheet: Non-Rising Stem Gate Valve
(Cast Iron Body / Bronze Seated / Brass Stem / NPT Threaded / Handwheel)
- General Information
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Item
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Standard Configuration
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User Specification / Remarks
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Vana növü
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Non-Rising Stem Gate Valve (Inside Screw)
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Stem does not rise; ideal for limited space
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Bədən materialı
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Cast Iron (ASTM A126 Class B / EN-GJL-250)
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|
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Seat Material
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Bronze (Integral or renewable)
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Bronze-to-bronze sealing
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Stem Material
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Brass (C36000 / C37700)
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Corrosion resistant
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End Connection
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Yivli (Female NPT per ASME B1.20.1)
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|
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Əməliyyat
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Handwheel
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Malleable iron / Ductile iron handwheel
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Design Standard
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MSS SP-70 / MSS SP-80 (Bronze trim) / ASME B16.34 (mod)
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|
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Üz-üzə
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Manufacturer standard per MSS SP-70 (Threaded ends)
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|
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Inspection & Test
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API 598 / MSS SP-70
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|
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Təzyiq dərəcəsi
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Class 125 / Class 150 (Optional)
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PN10 / PN16 available
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Size Range
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½” – 4″ (DN15 – DN100)
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|
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Temperatur Aralığı
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-20°C to +150°C (Limitation of brass stem and bronze seats)
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Stem Type
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Non-rising stem (Inside screw)
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Wedge Type
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Solid wedge / Double disc (Optional)
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- Design Features
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Feature
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Təsvir
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Benefit
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|
Non-Rising Stem
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Stem rotates but does not move linearly; threads inside valve
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Suitable for tight spaces, buried service
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Handwheel Operation
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Sturdy handwheel for manual operation
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Easy to operate, torque multiplication
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Bronze Seated
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Seat rings and wedge faces are bronze
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Excellent corrosion resistance, long life, smooth operation
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Full Port Design
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Straight-through full bore
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Low pressure drop, allows pigging
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Inside Screw
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Stem threads are inside the valve, protected from environment
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Longer stem life, no external threads to corrode
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Renewable Seat Rings
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Seat rings can be replaced (optional)
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Extended valve life
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Cast Iron Body
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Robust, cost-effective
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Suitable for water and non-corrosive services
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- Bill of Materials (Main Components)
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No.
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Part Name
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Material
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Qeydlər
|
|
1
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Bədən
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Cast Iron (ASTM A126 Class B)
|
|
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2
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Bonnet
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Cast Iron (ASTM A126 Class B)
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|
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3
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Wedge / Gate
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Bronze (ASTM B62 / B584)
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Solid wedge, bronze faces
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4
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Seat Ring (Body)
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Bronze (ASTM B62)
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Thread-in or pressed-in
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5
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Kök
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Brass (C36000 / C37700)
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Non-rising stem
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6
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Stem Nut / Thrust Washer
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Bronze / Brass
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|
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7
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Packing
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Graphite / PTFE
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|
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8
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Gland / Gland Follower
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Cast Iron / Brass
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|
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9
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Bonnet Gasket
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Compressed Fiber / Graphite
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|
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10
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Bonnet Bolts / Studs
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Steel (Zinc Plated) / Stainless Steel
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|
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11
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Handwheel
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Malleable Iron / Ductile Iron
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|
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12
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Handwheel Nut
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Steel / Brass
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|
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13
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Nameplate
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Stainless Steel / Aluminum
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|
- Technical Parameters & Performance
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Item
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Spesifikasiya
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|
Medium
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Water, Oil, Gas, Air, Steam, Non-corrosive Fluids
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|
Operating Temperature
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-20°C to +150°C (Brass stem limit)
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Max Working Pressure
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Class 125: 200 psi @ 100°F / 13.8 bar @ 38°C (Derate at higher temps)
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Seat Material
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Bronze-to-Bronze
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Sealing Performance
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API 598: Liquid – No visible leakage; Air – Class B permissible
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Flow Direction
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Bidirectional
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Flow Characteristic
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On-Off (Not for throttling)
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Buruq Tipi
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Full Bore (Standard)
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Stem Design
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Inside Screw, Non-Rising
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Handwheel Rotation
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Clockwise to Close
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Installation Position
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Any position
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- Test Pressure (Reference: Per API 598 / MSS SP-70)
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Təzyiq dərəcəsi
|
Shell Test (Hydrostatic)
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Seat Test (Hydrostatic)
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Low Pressure Seat Test (Pneumatic)
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Class 125
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400 psi (2.8 MPa)
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200 psi (1.4 MPa)
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50-80 psi (0.34-0.55 MPa)
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Sinif 150
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425 psi (2.9 MPa)
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315 psi (2.2 MPa)
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50-80 psi (0.34-0.55 MPa)
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*(Note: Tests performed per API 598 / MSS SP-70)*
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- Dimensions & Weight (Reference: Threaded End NPT / MSS SP-70)
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NPS
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DN (mm)
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L (Face-to-Face) mm
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H (Closed) mm (approx)
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Handwheel Diameter (mm)
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Weight (kg) approx
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½”
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15
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79
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110
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80
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1.5
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|
¾”
|
20
|
92
|
120
|
80
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2.0
|
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1″
|
25
|
111
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135
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100
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2.8
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1¼”
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32
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120
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150
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100
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3.6
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1½”
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40
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152
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170
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125
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5.0
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2″
|
50
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172
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195
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125
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7.0
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2½”
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65
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195
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225
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160
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11.0
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3″
|
80
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210
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255
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160
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15.5
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4″
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100
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254
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300
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200
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23.5
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(Note: Dimensions are for reference only. Refer to certified GA drawing for exact dimensions.)
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- Special Requirements / Options
- Təzyiq dərəcəsi: Class 125 / Class 150
- Son Bağlantı: NPT / BSP (Parallel or taper)
- Seat Type: Integral / Renewable bronze seat rings
- Wedge Material: Bronze (Standard) / Cast Iron with Bronze overlay / Stainless Steel
- Kök materialı: Brass (Standard) / Stainless Steel (304/316) / Bronze
- Kaput növü: Screwed-in bonnet / Bolted bonnet
- Packing Material: Graphite / PTFE / Non-asbestos
- Handwheel: Malleable iron / Ductile iron / Cast iron
- Test Certificate: EN 10204 Type 2.2 / 3.1
- Special Cleaning: For potable water / Oxygen service
- NACE Compliance: MR0175 (Requires material upgrade)
- Aksesuarlar: Locking device / Extension stem / Position indicator / Chainwheel
Design Notes:
- Non-Rising Stem (NRS) : The stem rotates within the valve; the gate travels along the stem threads. This design is ideal where vertical space is limited.
- Handwheel Operation: Provides mechanical advantage for easy operation. Standard rotation is clockwise to close.
- Bronze Trim: Provides excellent corrosion resistance and long-term reliable sealing. Bronze-on-bronze seats are standard for water and low-pressure steam services.
- Cast Iron Body: Suitable for non-shock applications; must be protected from rapid temperature changes and water hammer.
Application Notes:
- Suitable for: Water distribution, wastewater, irrigation, fire protection, HVAC, and general industrial services.
- Not suitable for: High-pressure steam, severe thermal cycling, or highly corrosive fluids (consult manufacturer for material upgrades).
- Installation: Can be installed in any position. For buried service, consider stem extension and position indicator.
Note: This datasheet is prepared for a Non-Rising Stem Gate Valve with cast iron body, bronze seats, brass stem, NPT ends, and handwheel operation per MSS SP-70 / API 598. Ensure selected materials, pressure rating, and trim are compatible with the specific service conditions.
ZƏMANƏT:
SAVVY VALVES müstəsna məhsul keyfiyyəti və narahatlıqsız satış sonrası xidmət göstərməyə sadiqdir. Bizim klapanlarımıza minimum 12 ay xidmət müddətinə zəmanət verilir, bu müddət ərzində biz bütün zəruri ehtiyat hissələri və ətraflı texniki xidmət təlimatlarını pulsuz təmin edəcəyik. Zəmanət müddəti ərzində insan tərəfindən törədilməmiş hər hansı zədə baş verərsə, biz komponentləri heç bir ödəniş etmədən əvəz edəcəyik və peşəkar texniki dəstək göstərəcəyik. Zəmanət müddəti bitdikdən sonra müştərilər endirimli texniki xidmətlərdən yararlanmaqla yanaşı, yalnız ehtiyat hissələrinin dəyərini ödəməlidirlər. Məqsədimiz etibarlı keyfiyyət və hərtərəfli satış sonrası dəstək vasitəsilə müştərilərə əməliyyat xərclərini azaltmaq və istehsal səmərəliliyini artırmaqda kömək etməkdir. İstər texniki sorğular, istərsə də texniki xidmət tələbləri üçün mütəxəssis komandamız klapan sisteminizin hər zaman optimal işləməsini təmin etmək üçün dərhal cavab verəcəkdir.
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