Butterfly Valve (Wafer Type)73 of 76 butterfly valvesSS304 Disc PTFE Seat Lug Butterfly Valve with Gear Operator

Butterfly Valve

Wafer Butterfly Valve

Name: Wafer Butterfly Valve
Brand: Euro Flow Control
SKU: EFC-459

Datasheet

Download datasheet (PDF)

Specifications are indicative. Final specification is confirmed at quotation.

Specifications

Confirmed at quote

Size Range: NPS 3" to NPS 12"
Pressure Class: 200 PSI
End connection: Wafer

Standards

Design & manufacture: ISO 5211

Configure your variant(manually adjust box on the right if you require a different spec)

Size
Pressure
End connection

Materials

All available material options per part. Click a pill to set it in the configurator.

Body
Disc
Seat
Stem
O-Ring
Retainer Ring

Dimensions per size(7 sizes)

Size	F (inch)	G (inch)	H (inch)	I (inch)	J (inch)	K (inch)	L (inch)	M (inch)	N (inch)	O	P (inch)	Q (inch)	R (inch)	Weight
NPS 3" / DN80	1.86	4.88	8.19	5.38	4	3.25	0.408	4.91	3/8	6	1	0.44	0.51	—
NPS 4" / DN100	2.11	6	9.88	6.88	4	3.25	0.408	7.03	1/2	6	1	0.44	0.63	—
NPS 5" / DN125	2.14	6	11.1	8.1	4	3.25	0.408	8.44	1/2	8	1	0.55	0.62	—
NPS 6" / DN150	2.2	6.5	11.75	8.75	4	3.25	0.408	9.16	1/2	8	1.25	0.44	0.75	—
NPS 8" / DN200	2.4	8.2	14.5	11	6	5	0.533	11.72	5/8	8	1.7	0.65	0.87	—
NPS 10" / DN250	2.65	9.97	18	13.38	6	5	0.533	13.72	5/8	8	1.8	0.56	1.14	—
NPS 12" / DN300	3.24	10.91	20.41	16.12	6	5	0.533	16.62	1/2	12	1.38	0.56	1.26	—

Dimension key

FFace-to-face

GCentreline to mounting face

HOverall height

IBody diameter/width

JTop mounting PCD

KTop mounting bolt centres

LMounting hole diameter

MFlange bolt circle

NStud size

ONumber of studs

PMounting flange thickness

QStem projection

RStem diameter

Disc material selection

Medium	Ductile Iron (Nickel Plated)	Ductile Iron (Nylon Coated)	Aluminium Bronze	SS316	Hastelloy C
Acetic Acid	N	G	N	E	E
Brine (Liquid)	N	E	G	E	N
Carbon Dioxide (Wet)	N	E	N	E	N
Diesel Fuel	E	E	E	E	E
Cement (Dry)	N	N	E	N	N
Cement (Slurry)	N	N	E	N	N
Drilling Mud	N	N	E	N	N
Gel Water	N	N	E	N	N
Hydrofluoric Acid	N	G	N	N	E
Hydrochloric Acid	N	G	N	N	E
Sea Mud	N	N	E	N	N
Xylene	G	E	E	E	E

E = Excellent · G = Good · N = Not recommended

Seat material selection

Medium	EPDM	NBR	FKM	PTFE
Acetic Acid	N	N	N	E
Brine (Liquid)	E	E	E	E
Carbon Dioxide (Wet)	E	G	E	E
Diesel Fuel	N	E	E	E
Cement (Dry)	G	G	G	N
Cement (Slurry)	G	G	G	N
Drilling Mud	N	G	G	N
Gel Water	N	N	E	N
Hydrofluoric Acid	G	N	G	E
Hydrochloric Acid	E	N	G	E
Sea Mud	N	N	G	N
Xylene	E	E	E	E

E = Excellent · G = Good · N = Not recommended

Indicative material suitability. Confirm final selection for the service medium at quotation.

Operating torque(6 sizes)

Size	200 PSI (13.8 bar)		50 PSI (3.4 bar)
Size	N·m	in·lb	N·m	in·lb
NPS 3" / DN80	34	300	22	195
NPS 4" / DN100	51	450	31	270
NPS 6" / DN150	102	900	62	550
NPS 8" / DN200	169	1500	113	1000
NPS 10" / DN250	301	2660	203	1800
NPS 12" / DN300	508	4500	395	3500

Wet opening torque, indicative. Size the actuator with margin and confirm at quotation. Source values in in·lb shown for reference.

Bill of materials

Ref	Component	Material	Qty
1	Body	Ductile Iron	1
2	Disc	Ductile Iron (Nickel Plated), Ductile Iron (Nylon Coated), Aluminium Bronze, SS316, Hastelloy C	1
3	Seat	NBR, EPDM, CSM, PTFE, FKM	1
4	Upper Stem	410 Stainless Steel	1
5	Lower Stem	410 Stainless Steel	1
6	O-Ring	NBR, FKM	2
7	Retainer Ring	Steel	2

Technical drawings(2 pages)

Operating media

Acetic acidBrineCarbon dioxide (wet)Diesel fuelCement (dry)Cement (slurry)Drilling mudGel waterHydrofluoric acidHydrochloric acidSea mudXylene

Actuation options

Manual leverBare shaft (actuator by others)

Features

Ten-position lever handle for precise throttling
One-piece phenolic-backed controlled-torque elastomer seat for tight shut-off
Split-stem design self-centres the disc around the seat
External grease fitting for long-term effortless operation
Gear, pneumatic or electric actuation available
Disc and seat grades are selected per medium: see the material selection table, since suitability varies by grade
Maximum working pressure 200 psi across the size range

Description

Resilient-seated wafer butterfly valve for mounting between flanges. One-piece phenolic-backed elastomer seat, split-stem self-centring disc and external grease fitting for smooth long-term operation. Ten-position lever throttling, with gear, pneumatic or electric actuation available. Sizes NPS 3 to 12. Disc and seat material options (aluminium bronze, nickel-plated or nylon-coated ductile iron, 316 stainless or Hastelloy C disc; EPDM, NBR, CSM, PTFE or FKM seat) allow selection for hydrocarbon and oilfield service such as diesel fuel and brine.

Selection notes

This butterfly valve is supplied for wafer installation.

Sizes run NPS 3" to NPS 12", in 200 PSI.

The body is Ductile Iron.

Seat and trim options are EPDM, NBR, CSM and PTFE. The seat, not the body, usually sets the temperature and medium limit, so confirm it against the service before ordering.

Stated service media include acetic acid, brine, carbon dioxide (wet), diesel fuel, cement (dry) and cement (slurry).

It is catalogued for Water & Wastewater, HVAC, Oil & Gas and Industrial Process.

Built to ISO 5211.

Used in

Water & Wastewater HVAC Oil & Gas Industrial Process

Related guides

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Variant details4 filled

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Size

Available: NPS 3", NPS 4", NPS 5", NPS 6", NPS 8", NPS 10", NPS 12"

Pressure

Available: 200 PSI

End connection

Actuation

Manual and gear operation ships with the valve. Powered actuation is sourced locally by the buyer.

Required approvals

None required

We confirm the certification with the manufacturer before quoting

Body

Available: Ductile Iron

Disc

Available: 5 options

Seat

Available: 5 options

Stem

Available: 410 SS

Additional parts (optional)

O-Ring

Available: 2 options

Retainer Ring

Available: Steel

Notes for the quote

Quantity

Your variant details are attached. Submit any time from My RFQ.

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Butterfly Valves configurations

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This product is part of the Butterfly Valves modular system. All configurations share the same hydraulically operated body: the control function is set by the pilot valve(s) attached. An existing Butterfly Valves body in the field can be reconfigured for a different duty simply by swapping the pilot, without replacing the body.

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