Flanged Diaphragm Valve SD41

DN

15~600 (1/2"~24")

PN

0.6~1.6 (Class150)

Temperature Range

-46°C~180°C

Connection

Flanged

Installation Direction

Bidirectional

Design

GB/T12239, BS5156

Face to Face

GB/T12221, BS5156, ISO5752, EN558, DIN3202

Flange Drilling

GB/T9113, ASME B16.5, EN1092, GOST12820, GOST33259, DIN2501, ISO2084

Top Connection

ISO5211, GOST55510

Inspection

GB/T13927, ISO5028, API598, JB/T9092, BS5156

Body Materials

GGG40, WCB, CF8, CF8M

Diaphragm Materials

11R, NR, NBR, EPDM, CR, FPM, FEP, PFA

Stem Materials

420, F6a, 304, 316

Seat Materials

GGG40, WCB, CF8, CF8M

[email protected]

Inquiry Now

Features & Benefits

SD41 has small fluid resistance and can be used in medium containing hard suspended solids, corrosive and viscous slurry. Since the medium is only in contact with the body and diaphragm, there is no packing gland, and no leakage and corrosion from the stem part.

A. Handwheel

The ductile iron handwheel is more durable. The right size makes the handwheel rotate more labor-saving.

B. Stem Bushing

The stem bushing acts as a support for the handwheel and drives the stem to rotate through the internal thread to lift the disc. Bronze and cast iron can be selected by requirements.

C. Stem

Different materials can be selected according to the working conditions. Hardness and corrosion resistance are the primary considerations.

D. Diaphragm

It separates the inner cavity of the lower body and the upper bonnet, so that the stem, bonnet and other parts above the diaphragm can be protected from corrosion of the medium. Fluoroplastic and rubber can be selected according to the medium.

E. Body

Its simple structure, good sealing, corrosion resistance, and small fluid resistance make it more widely used in low-pressure, highly corrosive medium, and even those containing suspended matter. The body can be cast or welded，and the face-to-face dimension can be customized by requirements.

Industry Options

Materials	Characteristics	Low Temp. ℃	High Temp. ℃	Recommended ℃
NR	High elasticity	-20	85	-5~70
NBR	Oil resistivity	-30	100	-15~90
EPDM	Aging resistance, ozone resistance, corrosion resistance	-40	125	-25~110
HT EPDM	Aging resistance, ozone resistance, corrosion resistance, heat resistance	-40	150	-25~135
Wear-resistant	Excellent traction performance and wear resistance	-30	100	-15~100
CR	Oil, heat, flame, sunlight, ozone, acid and alkali resistance	-30	125	-15~100
Hypalon	Oxidation resistance, resistance to winding and cracking	-40	120	-25~110
FPM (Viton)	Chemical and most oils resistance, (except ketones & esters)	-20	200	-5~150
MVQ (Silicon)	High and low temperature resistance, oil, corrosion resistance	-55	200	-30~180

Dimensions

GB/T 9113 PN16

DN	L	D	D1	D2	b	f	n-Φd
50	210	165	125	102	16	3	4-18
65	250	185	145	122	18	3	8-18
80	300	200	160	138	20	3	8-18
100	350	220	180	158	20	3	8-18
125	400	250	210	188	22	3	8-18
150	460	285	240	212	24	3	8-22
200	570	340	295	268	26	3	12-22
250	680	405	355	320	30	3	12-26
300	790	460	410	378	30	4	12-26