Images 3

KD 21

Piston type diaphragm seal

piston instead of diaphragm: For extremely rough conditions with abrasive media
for pressures from 10 bar to 600 bar
robust and reliable pressure measurement
shock- and vibration-resistant

For mounting to Bourdon tube pressure gauges, pressure transducers or pressure switches. For corrosive, polluted and abrasive suspensions at high pressures. Specially for pressure measurements in waste water, drilling water, sludge, concrete, plaster and minerals.

process connection, standard	Process connection	Instrument connection	Nominal diameter	Nominal pressure	minimum range* (in bar) at nominal size				Part no.
process connection, standard	63	Instrument connection	Nominal diameter	Nominal pressure	100	160	DMU	DMU 13 Vario
	½-14 NPT	Welded connection		PN 600	10 bar	16 bar	16 bar	10 bar	31425W
	¾-14 NPT	Welded connection		PN 600	10 bar	16 bar	16 bar	10 bar	31426W
	1-11½ NPT	Welded connection		PN 600	10 bar	16 bar	16 bar	10 bar	31427W
	1½-11½ NPT	Welded connection		PN 600	10 bar	16 bar	16 bar	10 bar	31428W
	2-11½ NPT	Welded connection		PN 600	10 bar	16 bar	16 bar	10 bar	31429W

in-stock items
manufactured goods

Process connection

: Stainless steel 316 L

Seal: FKM (Viton)

pressure connection

: Stainless steel 316 L

: flush

Instrument connection

: Welded connection

pressure transmission liquid

: Paraffin oil (FM 09), FDA-listed

pressure range: see ordering table

Nominal pressure: PN 600

Accuracy: with pressure gauge CI. 2.5
mit Druckmessumformer 1,0 % FSO

Can be mounted to

Bourdon tube pressure gauges NG 50, 63, 80, 100, 160 and RF 130 PG
Druckmessumformer (DMU)
Pressure switches (DS)

Click the corresponding image for detail views, additional information and dimension tables.

Druckmittler

PDF

G	d	h	H	a	b	SW
G½B	26	17	33,5	3	3	27
G¾B	32	19	34	3	3	32
G1B	39	21	36	3	3	41
G1½B	55	25	48	3	3	55
G2B	68	27	56	3	3	70
½-14 NPT	-	20	33,5	-	-	27
¾-14 NPT	-	-	-	-	-	-
1-11½ NPT	-	24	36	-	-	41
1½-11½ NPT	-	25	45	-	-	55
2-11½ NPT	-	26	50	-	-	70

KD 21

Piston type diaphragm seal

Benefits

Application

Variants

Technical data

Technical drawings

Click the corresponding image for detail views, additional information and dimension tables.

Type KD 21

Downloads

Druckmittler

Related products