Good Interchangeability Welded Seal DN400 PN10 Butterfly Valves Low Flow Resistance

Good Interchangeability Welded Seal Butterfly Valves

 

Butterfly Valves introduction:

 

it is the advance performance for the butterfly valve, the simple structure, The fluid flow,light weight, easy installation and low driving torque, can be use for cut off medium or regulated flow. The motivation can be according to the customer request,we have the handle, pneumatic and electrically operated valve, the difference situation will be match the different material according the function.

 

Product Advantages:

 

1) Small in size and light in weight and maintaince.
It can be mounted whereever needed.

 

2) Simple, compact structure, quick 90 degree on-off operation.

 

3) Disc has two-way bearing, perfect seal, without leakage under
the pressure test.

 

4) Flow curve tending to straight-line. Excellent regulation performance.

 

5) Various kinds of materials, applicable to different medium.

 

Materials

 

Materials of Body : Ductile Iron (GGG40, GGG50). Cast Iron (GG25), Stainless Steel

Materials of Disc : Stainless Steel. Nickel Plated, Ductile Iron, Ductile Iron Coated Plastic,

Titanium Steel, Copper Alloy etc

Materials of Seat : Ethylene-Propylene-Diene Monomer (EPDM), Polytetrafluoroethylene (PTFE),

Nitrile Rubber (NBR), Chloroprene, Chlorosulfonated Polyethylene (Hypalon),

Silicon, Fluoroelastomer (VITON) , Caoutchouc etc.

Materials of Stem : Stainless Steel. Carbon Steel ,2Cr13

A butterfly valve is a type of flow control device, typically used to regulate a fluid flowing through a section of pipe.
The valve is similar in operation to a ball valve. A flat circular plate is positioned in the center of the pipe.
The plate has a rod through it connected to an actuator on the outside of the valve. Rotating the actuator turns the
plate either parallel or perpendicular to the flow. Unlike a ball valve, the plate is always present within the flow,
therefore a pressure drop is always induced in the flow regardless of valve position.

 

 

Standard

 

Design: EN 593, EN 1074-1&2; IS 13095 Double Eccentric DoubleFlanged Butterfly Valve;

 

Face to Face in acc. EN 558 / ISO 5752 series 14;

 

Flange Drilling in acc. to EN 1092-2;

 

Worm Gear Box with Hand Wheel;

 

ISO 5211 Mounting Flange standard;

 

Testing in acc. EN 12266-1;

 

Fusion Bonded Non-toxic Epoxy Powder Coating w/o NSF61/WRAS

 

 

Technical Specification

 

- Nominal diameter:150～2600mm

- Nominal pressure:1.0/1.6/2.5Mpa
- Strength testing pressure:1.5/2.4/3.75Mpa

- Sealing testing pressure:1.1/1.76/2.75Mpa

Executive standard

Design standard	DIN3354
Face to face	DIN3202 or BS 5155
Flange end	DIN 2501
Test & inspection	DIN 3230 or GB/T 13927
Working temperature	NBR<80℃; EPDM<120℃; FPM<160℃

 

Main external and connection dimension

 

1.0MPa mm

DN	L		H1	H2	H3	Flange dimensions comply with DIN 2501
	long type	short type				O	C	g	f	b	n-d
150	210	140	226	165		285	240	212	3	19	8-23
200	230	152	255	192		340	295	268	3	20	8-23
250	250	165	293	227		395	350	320	3	22	12-23
300	270	178	326	260		445	400	370	4	24.5	12-23
350	290	190	368	314		505	460	430	4	24.5	16-23
400	310	216	423	346	634	565	515	482	4	24.5	16-28
450	330	222	455	385	666	615	565	532	4	25.5	20-28
500	350	229	506	422	728	670	620	585	4	26.5	20-28
600	390	267	568	490	790	780	725	685	5	30	20-31
700	430	292	632	550	854	895	840	800	5	32.5	24-31
800	470	318	692	615	924	1015	950	905	5	35	24-34
900	510	330	815	678	1098	1115	1050	1005	5	37.5	28-34
1000	550	410	880	743	1163	1230	1160	1110	5	40	28-37
1200	630	470	1024	860	1307	1455	1380	1330	5	45	32-40
1400	710	530	1210	1010	1350	1675	1590	1535	5	46	36-43
1600	790	600	1340	1140	1480	1915	1820	1760	5	49	40-49
1800	870	670	1460	1360	1640	2115	2020	1960	5	52	44-49
2000	950	760	1660	1485	1800	2325	2230	2170	5	55	48-49

 

1.6MPa mm

DN	L		H1	H2	H3	Flange dimensions comply with DIN 2501
	long type	short type				O	C	g	f	b	n-d
150	210	140	226	165		285	240	212	3	19	8-23
200	230	152	255	192		340	295	268	3	20	12-23
250	250	165	293	227		405	355	320	3	22	12-28
300	270	178	326	260		460	410	378	4	24.5	12-28
350	290	190	368	314		520	470	438	4	26.5	16-28
400	310	216	423	346	634	580	525	490	4	28	16-31
450	330	222	455	385	666	640	585	550	4	30	20-31
500	350	229	506	422	728	715	650	610	4	31.5	20-34
600	390	267	568	490	790	840	770	725	5	36	20-37
700	430	292	632	550	854	910	840	795	5	39.5	24-37
800	470	318	692	615	924	1025	950	900	5	43	24-40
900	510	330	815	678	1098	1125	1050	1000	5	46.5	28-40
1000	550	410	880	743	1163	1255	1170	1115	5	50	28-43
1200	630	470	1024	860	1307	1485	1390	1330	5	57	32-49
1400	710	530	1210	1010	1350	1685	1590	1530	5	60	36-49
1600	790	600	1340	1140	1480	1930	1820	1750	5	65	40-56

2.5MPa mm

DN	L		H1	H2	H3	Flange dimensions comply with DIN 2501
	long type	short type				O	C	g	f	b	n-d
150	210	140	226	165		300	250	211	3	20	8-28
200	230	152	255	192		360	310	274	3	22	12-28
250	250	165	293	227		425	370	330	3	24.5	12-31
300	270	178	326	260		485	430	390	4	27.5	16-31
350	290	190	368	314		555	490	450	4	30	16-34
400	310	216	423	346	634	620	550	500	4	32	16-37
450	330	222	455	385	666	670	600	560	4	34.5	20-37
500	350	229	506	422	728	730	660	610	4	36.5	20-37
600	390	267	568	490	790	845	770	720	5	42	20-40
700	430	292	632	550	854	960	875	820	5	46.5	24-43
800	470	318	692	615	924	1085	990	930	5	51	24-49
900	510	330	815	678	1098	1185	1090	1028	5	55.5	28-49
1000	550	410	880	743	1163				5
1200	630	470	1024	860	1307				5
1400	710	530	1210	1010	1350				5

 

 

1. BRIEF INTRODUCTION:

The butterfly valve is operated by the disc rotating form 0° to 90°, can be applied to cut off or regulate

the flow of medium.

 

The valve can be actuated by operating lever, handle wheel electric actuator or pneumatic actuator.

 

Widely used for potable water supply, waste water treatment, electric power plant, gas supply,

warm-air system, smelting plant, ship building, textile, petroleum, chemistry, or other light industries.

 

2. Specification

name		Butterfly Valve
Item No		D373H-10K
DN(mm)		DN50~DN3000
pressure(Mpa)		1.0
Test pressure (Mpa)	Seal test	1.1
	Body test	1.5
temperature		≤350℃
medium		Water, sewage, sea water, hot water etc.,

 

3. FEATURES

⊙ EPDM seated, good seal

⊙ Low weight

⊙ Low flow resistance

⊙ Small operation torque

⊙ Easy to install and maintain

⊙ Open-close 90° more smoothly

 

4. APPLICABLE STANDARDS

1. Design according : API 609

2. Test standard according: JIS B2003

3. Connect flange standard according: JIS B2212

4. Face to face standard according: JIS B2002

 

5. Item Name of part Material Spec

NO	Part name	Material
1	Body	SS304
2	Gear box	Assembly
3	Disc	SS304
4	Stem	SS416
5	Seal ring	316+Graphite
6	packing	Graphite

 

6. Operation:

6.1. The two pipe flange should be smooth.

6.2. Put the butterfly valve in the pipe line, fixed the orientation hole first.

 

7. Delivery:

When delivery or store the butterfly valve, should keep in dry and cool environment.

 

8. Note:

8.1. Pipe flange should same as the butterfly valve flange.

8.2. Check the valve before installed, the environment should correspond to the butterfly valve

specification.

8.3. Before open butterfly valve, checking the disc without dirt.

8.4. The disc must be shut off place when installed.

8.5. Adjusting the pipe connect before installed.

8.6. The connect flange should be parallel.

8.7. After installed, the pressure test disc should be open place.

8.8. If the butterfly can not natural open or close, please kindly check it careful, can not strike, tamp or

use extension lever.

8.9. When maintenance or operation, must check the stem, lever, gear box or actuator have correctly

connect. Otherwise the stem will be push by pipe pressure.

 

9. The malfunction and resolving:

malfunction	whys	solution
Seal leak	1, Some rubbish on the seal 2, Seal have been light damage	① Clean the rubbish. ② Replacing the disc
Stem Packing leak	1, packing be damaged 2, packing lapse	① Tighten the gland nut ② Change the packing
flange leak	1, the nut release 2, gasket lapse	1 . Tighten the nut 2. Change the gasket

 

10. Maintenance

Open the worm box cover and add some butter per two months.

Check the seal, packing and flange, if leak, please maintain ASAP.