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BAUTU API 608 manual ball valve, flanged, lever operated

CF8 body and bonnet with cast class and material markings

Soft-seated ball valve · Made in Wenzhou

API 608 Manual Ball Valve — Lever Operated

MODEL Q41F · API 608 / ASME B16.34 · TESTED PER API 598

Flanged floating ball valve for on/off service in water, oil, gas and chemical lines. PTFE seat with zero visible leakage per API 598, opened and closed by a quarter-turn hand lever.

SizeNPS ½″–8″

Class150 / 300

BodyWCB · CF8 · CF3M

SeatPTFE / RPTFE

EndsRF, ASME B16.5

OperationHand lever

Bodies cast in our own foundry, traceable to the heat number
Every valve shell and seat tested per API 598, test report in every shipment
Standard sizes ship in 15–20 days

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An engineer replies within 24 hours. Send size, class, material and quantity.

Specifications Materials Dimensions Pressure rating Testing How to order Video FAQ

Specifications

Technical Data

Design standard	API 608 / ASME B16.34
Face-to-face	ASME B16.10
Flanges	ASME B16.5, raised face
Size range	NPS ½″–8″ (DN15–DN200)
Pressure class	Class 150 / Class 300
Body material	WCB (A216) · CF8 (A351) · CF3M (A351)
Ball	SS304 / SS316
Seat	PTFE (standard) · RPTFE (option)
Temperature	−29 °C to +150 °C (PTFE) · up to +180 °C (RPTFE)
Construction	Two-piece body, floating ball, anti-static device
Operation	Quarter-turn hand lever with stop plate
Testing	API 598 — every valve
Media	Water, oil, gas and chemical service

Application

Where It Is Used

On/off isolation where a simple, reliable manual valve is needed and the media is clean.

Oil and gas plant and terminal piping
Petrochemical and chemical process plants
Water treatment and industrial utilities
Chemical dosing lines (CF3M body)
Power plant auxiliary systems

Ball valve assembly hall at the BAUTU plant in Wenzhou

ASSEMBLY HALL · WENZHOU

Construction

Parts & Materials

From our Q41F-150LB general assembly drawing. Every body casting is marked with size, class and material.

Part	WCB body	CF8 body	CF3M body
Body / Bonnet	A216 WCB	A351 CF8	A351 CF3M
Ball	SS304	SS304	SS316
Stem	A182 F304	A182 F304	A182 F316
Seat	PTFE	PTFE	PTFE
Body gasket	PTFE	PTFE	PTFE
Stem packing	PTFE	PTFE	PTFE
Thrust washer	PTFE	PTFE	PTFE
O-ring	FPM	FPM	FPM
Anti-static spring	17-7PH	17-7PH	17-7PH
Studs / Nuts	A193 B7 / A194 2H	A193 B8 / A194 8	A193 B8 / A194 8
Gland	A351 CF8	A351 CF8	A351 CF8
Stop plate	A276 304	A276 304	A276 304
Lever	A216 WCB	A216 WCB	A216 WCB

Dimensions

Dimensions — Class 150 (mm)

NPS	DN	L	D	D1	D2	T	f	n-Ød	M
½″	DN15	108	90	60.3	35.1	11.6	2	4-Ø16	145
¾″	DN20	117	100	69.9	42.9	13.2	2	4-Ø16	145
1″	DN25	127	110	79.4	50.8	14.7	2	4-Ø16	160
1¼″	DN32	140	115	88.9	63.5	16.3	2	4-Ø16	160
1½″	DN40	165	125	98.4	73.2	17.9	2	4-Ø16	230
2″	DN50	178	150	120.7	91.9	19.5	2	4-Ø19	230
2½″	DN65	190	180	139.7	105	22.7	2	4-Ø19	250
3″	DN80	203	190	152.4	127	24.3	2	4-Ø19	270
4″	DN100	229	230	190.5	157	24.3	2	8-Ø19	310
5″	DN125	356	255	215.9	186	24.3	2	8-Ø22	450
6″	DN150	394	280	241.3	216	25.9	2	8-Ø22	550
8″	DN200	457	345	298.5	270	29	2	8-Ø22	650

L = face-to-face (ASME B16.10) · D = flange O.D. · D1 = bolt circle · D2 = raised face O.D. · T = flange thickness · f = raised face height · n-Ød = bolt holes · M = lever length. Flanges to ASME B16.5.

Class 300 (mm)

NPS	DN	L	D	D1	D2	T	f	n-Ød
½″	DN15	140	95	66.7	35.1	14.7	2	4-Ø16
¾″	DN20	152	115	82.6	42.9	16.3	2	4-Ø18
1″	DN25	165	125	88.9	50.8	17.9	2	4-Ø18
1¼″	DN32	178	135	98.4	63.5	19.5	2	4-Ø18
1½″	DN40	190	155	114.3	73.2	21.1	2	4-Ø22
2″	DN50	216	165	127	91.9	22.7	2	8-Ø18
2½″	DN65	241	190	149.2	105	25.9	2	8-Ø22
3″	DN80	282	210	168.3	127	29	2	8-Ø22
4″	DN100	305	255	200	157	32.2	2	8-Ø22
5″	DN125	381	280	235	186	35.4	2	8-Ø22
6″	DN150	403	320	269.9	216	37	2	12-Ø22
8″	DN200	502	380	330.2	270	41.7	2	12-Ø26

Class 300 face-to-face per ASME B16.10 and flanges per ASME B16.5, from our Class 300 GA drawing. Lever length on request.

Face-to-face length of a 2½ inch Class 150 WCB ball valve checked with a caliper

FACE-TO-FACE CHECK

Quality certificate tag on a BAUTU ball valve

QC TAG ON EVERY VALVE

Checked before packing

Face-to-face and flange dimensions are checked with calipers against ASME B16.10 and B16.5. Each valve gets a QC tag with model, size, rating, temperature, media and inspector.

Pressure rating

Max. Working Pressure at 38 °C

Body material	Class 150 (bar)	Class 300 (bar)
WCB (Group 1.1)	19.6	51.1
CF8 (Group 2.1)	19.0	49.6
CF3M (Group 2.3)	15.9	41.4

Body ratings per ASME B16.34. The seat sets the temperature limit: +150 °C with PTFE, +180 °C with RPTFE.

Testing

API 598 Test on Every Valve

Test	Class 150	Class 300
Shell test (water)	3.0 MPa	7.5 MPa
Seat test (water)	2.2 MPa	5.5 MPa
Seat test (air)	0.6 MPa	0.6 MPa

Test pressures per API 598; actual values for each valve are on the test report.

Checking stainless steel ball valve bodies with a handheld spectrometer

MATERIAL CHECK · SPECTROMETER

▶ PRESSURE TEST VIDEO

Quality records

Mill Test Certificate (EN 10204 3.1) in Every Shipment

Heat number of the body casting
Chemical composition against ASTM limits
Mechanical properties: tensile, yield, elongation
Shell and seat test pressure and hold time per API 598
Signed and stamped by our QC department

BAUTU ball valve mill test certificate, EN 10204 type 3.1 sample with heat number, chemical composition and mechanical properties

SAMPLE MTC · EN 10204 3.1 · CLICK TO OPEN

We welcome third-party inspection (e.g. SGS or BV), arranged and paid for by the buyer; inspectors get full access to our plant and test bench.

Download Sample MTC (PDF)

How to order

Model Code Q41F-150LBC

QBall valve

4Flanged ends

1Floating ball, straight-through

FPTFE seat

150LBPressure class

CBody material (C = WCB)

The model code is printed on the nameplate and the QC tag. We confirm the full code on the order confirmation.

Send us these 8 details for a fast quote

Size (NPS or DN)
Pressure class (150 / 300)
Body material (WCB / CF8 / CF3M)
Seat (PTFE / RPTFE)
Media and temperature
Quantity
Marking or nameplate needs
Destination port

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Made in one plant

From Machining to Crate in Wenzhou

Machining a stainless steel ball valve body

01 MACHINING

Drilling the flange bolt holes of a ball valve body

02 DRILLING

Tightening body bolts during ball valve assembly

03 ASSEMBLY

Ball valve clamped in the API 598 hydraulic test press

04 API 598 TEST

See the valve before you order

Real footage of the valve from our plant. Want to see your own order? Book a live video call and we show your valves on the test bench.

Book a Video Tour

Export crates ready to ship in front of the BAUTU plant in Wenzhou

CRATED AT OUR PLANT

Packing & delivery

Packed for Sea Freight

Flange faces capped to protect the raised face
Each valve bagged; the order packed in plywood cases
MTC (EN 10204 3.1) inside every case
Standard sizes ship in 15–20 days

FAQ

Frequently Asked Questions

Is this valve manually operated, and can it be automated later?

Yes. It ships with a quarter-turn hand lever and a small mounting pad, so a pneumatic or electric actuator can be added later with a mounting bracket and coupling. If you plan to automate from the start, choose our API 608 high-platform ball valve: its built-in ISO 5211 mounting pad takes the actuator directly.

Which body material should I choose: WCB, CF8 or CF3M?

WCB carbon steel for non-corrosive water, oil and gas. CF8 (cast 304) for general corrosion resistance. CF3M (cast 316L) for chlorides, seawater and chemical service.

What temperature can the seat take?

Standard PTFE seats are rated −29 °C to +150 °C. RPTFE seats are available for service up to +180 °C. For steam or hotter media, use our metal-seated ball valve.

What documents ship with the valve?

A mill test certificate (MTC) to EN 10204 type 3.1 with the heat number of the body casting, chemical composition, mechanical properties and the API 598 shell and seat test results. We welcome third-party inspection (e.g. SGS or BV), arranged and paid for by the buyer.

What is the lead time?

Standard sizes ship in 15–20 days. Special materials or options may take longer; we confirm the delivery date with your quote.

Are BAUTU ball valves API certified?

They are designed and built to API 608 and ASME B16.34, and every valve is pressure-tested per API 598. We do not hold an API Monogram licence. API 607 fire-type testing and ISO 9001 are in application. Every order ships with a Product Test Report (heat number, chemistry, mechanical properties and API 598 test results). Third-party inspection (e.g. SGS or BV) is welcome, arranged by the buyer.