3″-150LB-RF Heavy Pattern 304SS Floating Ball Valve

Product Name Stainless Steel Flanged Floating Ball Valve
Nominal Size 3″ (DN80)
Pressure Rating Class 150LB
Body Material 304 Stainless Steel (ASTM A351 CF8 / SS304)
End Connection Flanged
Construction Floating ball, two-piece / side-entry
Bore Type Full bore (full port)
Seat Seal Type Soft seated (PTFE / RPTFE / PPL)
Fire Safe Design Optional, to API 607

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TECHNICAL DATA SHEET

3″-150LB-RF Heavy Pattern 304SS Floating Ball Valve

General Description

Item	Description
Product Name	Stainless Steel Flanged Floating Ball Valve
公称サイズ	3″ (DN80)
圧力定格	Class 150LB
ボディ素材	304 Stainless Steel (ASTM A351 CF8 / SS304)
End Connection	Flanged
Construction	Floating ball, two-piece / side-entry
ボアタイプ	Full bore (full port)
Seat Seal Type	Soft seated (PTFE / RPTFE / PPL)
Fire Safe Design	Optional, to API 607

This 3-inch, Class 150LB stainless steel floating ball valve is of heavy pattern construction. The body is made of 304 stainless steel (CF8). Flange ends conform to ASME B16.5. Suitable for water, oil, gas and mildly corrosive media for on-off service.

Design & Manufacturing Standards

Item	標準
Design & Manufacture	ASME B16.34, API 6D, API 608
Face-to-Face Dimensions	ASME B16.10
Flanged Ends	ASME B16.5
Butt Weld Ends	ASME B16.25
Inspection & Testing	API 598
Wall Thickness	ASME B16.34, GB12224
Fire Test (optional)	API 607
Anti-static	API 608
Mounting Pad	ISO 5211

Main Technical Parameters

パラメータ	Value
Nominal Size (NPS)	3″ (DN80)
Pressure Class	150LB
Suitable Media	Water, oil, gas, mild corrosive fluids
Temperature Range	-20°C ~ +180°C (PTFE/RPTFE)
Max. Temperature (PPL seats)	-20°C ~ +300°C
Max. Working Pressure (ambient)	1.96 MPa (285 psi)
Hydrostatic Shell Test Pressure	1.5 × rating (~2.94 MPa)
Hydrostatic Seat Test Pressure	1.1 × rating
Low Emission Test (optional)	ISO 15848
アクチュエーション	Manual (lever/gear) / pneumatic / electric
Flow Direction	Bidirectional
手術	90° quarter-turn

Pressure-Temperature Ratings (ASME B16.34, Material Group 2.1)

Temperature (°C)	Max. Working Pressure (MPa)
-29 ~ 38	1.96
93	1.78
121	1.62
149	1.50
177	1.42
204	1.35
232	1.30
260	1.26
288	1.22
316	1.18
343	1.15
371	1.12
399	1.09
427	1.06

Note: Ratings per ASME B16.34 for Material Group 2.1 (304 SS) for flanged end valves.

Dimensional Data

5.1 Face-to-Face & Overall Dimensions (mm)

DN	NPS	L (Face-to-Face)	D (Flange OD)	C (Flange Thk.)	G (RF Dia.)	t (RF Height)	H (Height)	W (Lever Length)	n-φ (Bolt holes)
80	3″	203	190	19	127	1.6	196	350	4-φ19

Dimensions per ASME B16.10 and B16.5.

5.2 Flange Connection Details (ASME B16.5 Class 150 RF)

パラメータ	Value (mm)
Flange OD (D)	190.5
Bolt circle dia. (D1)	152.4
Bolt hole dia. (d)	19.1 (3/4″)
No. of bolt holes	4
Flange thickness (C)	23.8 (including RF)
Sealing face	RF (raised face, height 1.6 mm)
Bolt size	5/8″ (M16)

5.3 Recommended Bolt Torque

Bolt Size	Recommended Torque (N·m)
5/8″ (M16) ASTM A193 Gr.B7	120 ~ 140

Note: Torque values are reference only. Adjust according to gasket type and service conditions.

Bill of Materials (Heavy Pattern / 304SS)

No.	Part Name	ASTM Material	GB Material	Remarks
1	体	A351 CF8	0Cr18Ni9 / 304	Investment cast
2	Bonnet	A351 CF8	0Cr18Ni9 / 304	Investment cast
3	ボール	304 / 2Cr13 (plated)	304	Full bore
4	Seat Ring	PTFE / RPTFE / PPL	PTFE / RPTFE / PPL	Self-lubricating
5	幹	SS304	2Cr13 / 304	Blow-out proof
6	Stem Packing	PTFE / Graphite	PTFE / Flexible graphite	V-ring set
7	Body Gasket	PTFE / 304+Graphite spiral	PTFE / Spiral wound
8	Bolts / Studs	A193 Gr.B8 (304)	1Cr18Ni9Ti	Corrosion resistant
9	Nuts	A194 Gr.8 (304)	1Cr18Ni9Ti
10	Lever (manual)	Carbon steel / SS	Q235 / 304	Lockable optional
11	Gland	A351 CF8	0Cr18Ni9 / 304
12	Anti-static device	SS / spring	SS304 / phosphor bronze	Per API 608
13	Fire-safe seal (opt.)	Graphite	Expanded graphite	Per API 607

Construction Features

Feature	Description
Floating ball design	Medium pressure pushes ball against downstream seat for tight shut-off
Full bore	Minimal flow resistance, equivalent to same length of pipe
Blow-out proof stem	Stem retained against internal pressure
Anti-static device	Conductive path between ball and stem to prevent static buildup (API 608)
ISO 5211 mounting pad	Direct mounting of pneumatic/electric actuators
Fire-safe option	Graphite secondary seal to API 607
Seat material	PTFE/RPTFE/PPL – self-lubricating, corrosion resistant, tight sealing
90° operation	Quick quarter-turn from fully open to fully closed

Inspection & Testing (API 598)

Test	プレッシャー	Hold Time	Acceptance
Shell hydrostatic	1.5 × rating (~2.94 MPa)	≥3 min	No leakage or visible deformation
High pressure seat (water)	1.1 × rating (~2.16 MPa)	≥3 min	No visible leakage
Low pressure seat (air)	0.5 ~ 0.7 MPa	≥1 min	No leakage across seat
Anti-static test	Per API 608	—	Resistance ≤ 10 Ω

Optional tests:

ISO 15848 low emission
API 607 fire test
NDT per ASME B16.34

Operating Torque (Reference)

For soft-seated floating ball valve, clean medium at ambient temperature.

Condition	Break-to-Open (N·m)	Break-to-Close (N·m)
Ambient, no pressure (PTFE seats)	40 ~ 50	40 ~ 50
Ambient, 1.0 MPa	55 ~ 70	55 ~ 70
Ambient, 1.96 MPa (max rating)	70 ~ 85	70 ~ 85
High temperature (>150°C)	+20% ~ +30%	+20% ~ +30%
Low temperature (<0°C)	+15% ~ +25%	+15% ~ +25%

Important: These values are for reference. For actuator sizing, multiply by a safety factor of 1.3 ~ 1.5.

Flow Coefficient (Cv) – Full Bore

NPS	Cv (typical, full port)
3″	400 ~ 500

Note: Cv = US gal/min of 60°F water at 1 psi pressure drop. Exact value depends on ball port diameter.

Service Conditions & Media

Industry	Typical Media
Petrochemical	Crude oil, refined products, natural gas, LPG
Water treatment	Clean water, sewage, reclaimed water
Food & beverage	Food grade media (with food grade seals)
Pharmaceutical	Process water, drug solutions (with sanitary finish)
General industry	Compressed air, steam, thermal oil

Limitations for 304 SS body:

Not suitable for strong oxidizing media (e.g. concentrated nitric or sulfuric acid – use 316/316L)
Avoid high chloride concentrations (risk of stress corrosion cracking)
For >200°C, use PPL seats or metal seated design

Weight & Packaging

Item	Value
Approx. net weight	12 ~ 15 kg
Packaging	Export wooden case / standard export packing
Protection	Plastic flange protectors, rust preventive coating

Installation & Maintenance Notes

Pre-installation check: Verify valve size, material, pressure rating match line requirements. Clean pipe interior to avoid damaging sealing surfaces.
Flange connection: Use gasket conforming to ASME B16.5 (e.g. spiral wound or PTFE). Tighten bolts evenly in a cross pattern to avoid flange misalignment.
手術： Handle parallel to pipe = open; perpendicular = closed. Do not use extension levers or impact tools.
Temperature effect: PTFE/RPTFE seats may expand at high temperature, increasing torque. Allow margin in actuator sizing.
Maintenance: Inspect operation and sealing every 6 months. For valves idle for long periods, cycle the valve periodically to prevent seat adhesion.

Ordering Information

Please specify the following when ordering:

Size (NPS/DN) and pressure class
Body material (304/316/WCB etc.)
Seat/seal material (PTFE/RPTFE/PPL/metal)
End connection type & standard (ASME/DIN/JIS)
Actuation (manual lever/gear/pneumatic/electric)
Fire safe required? (API 607)
Anti-static device required?
Medium, operating temperature & pressure
Special requirements (ISO 15848 low emission, NDT, etc.)

Manufacturer Information (to be filled)

Item	Description
製品	3″-150LB-RF Heavy Pattern 304SS Floating Ball Valve
Model	Q41F-150LB Heavy Pattern
Issue Date	April 14, 2026
Version	V1.0

Disclaimer: This technical data sheet is prepared based on ASME B16.34, API 6D, API 598 and other industry standards. Actual product parameters are subject to the nameplate and factory test report. For special service conditions, please consult the manufacturer’s engineering department.

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