Specification sheets

1 2 3 4 5

GEMÜ R629

Motorized diaphragm valve

GEMÜ R639

Motorized diaphragm valve

GEMÜ R647

Pneumatically operated diaphragm valve

GEMÜ R649

Motorized diaphragm valve

GEMÜ R677

Manually operated diaphragm valve

GEMÜ R690

Pneumatically operated diaphragm valve

GEMÜ W600

Welding configurations

1 2 3 4 5

Standard formula calculator

Calculation for:

Units of length

inch

yrds

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°F

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hPa

N/m²

Torr

Bar

mBar

Ksi

Psi

Volume flow

l/min

l/h

l/d

UK gal. / min

UK gal. / h

UK gal. / d

US gal. / min

US gal. / h

US gal. / d

m³/h

Weight

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Short tons (tn.sh.)

Long hundredweight (cwt.l.)

Short hundredweight (cwt.sh.)

Pounds (lb.t.)

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Liquids

Absolute pressure upstream of the valve (p1) in bar

Absolute pressure downstream of the valve (p2) in bar

Density (p) in kg/dm³

Flow rate (Q) in _nm³/h

Pressure differential (ΔP) in bar

Mass flow (G) in kg/h

Standard density (ρn) in kg/m³

Valve key value (KVs) in m³/h

Volume flow (Qn) in _nm³/h

Absolute temperature upstream of the valve (T1) in °C

Specific volume at p2 and t1 (V2) in m³/kg

Specific volume at p1/2 and t1 (V*) in m³/kg

Supercritical volumetric flow

Subcritical volumetric flow

Gases

Absolute pressure upstream of the valve (p1) in bar

Absolute pressure downstream of the valve (p2) in bar

Density (p) in kg/dm³

Flow rate (Q) in _nm³/h

Pressure differential (ΔP) in bar

Mass flow (G) in kg/h

Standard density (ρn) in kg/m³

Valve key value (KVs) in m³/h

Volume flow (Qn) in _nm³/h

Absolute temperature upstream of the valve (T1) in °C

Specific volume at p2 and t1 (V2) in m³/kg

Specific volume at p1/2 and t1 (V*) in m³/kg

Supercritical volumetric flow

Subcritical volumetric flow

Steam saturated

Absolute pressure upstream of the valve (p1) in bar

Absolute pressure downstream of the valve (p2) in bar

Density (p) in kg/dm³

Flow rate (Q) in _nm³/h

Pressure differential (ΔP) in bar

Mass flow (G) in kg/h

Standard density (ρn) in kg/m³

Valve key value (KVs) in m³/h

Volume flow (Qn) in _nm³/h

Absolute temperature upstream of the valve (T1) in °C

Specific volume at p2 and t1 (V2) in m³/kg

Specific volume at p1/2 and t1 (V*) in m³/kg

Supercritical volumetric flow

Subcritical volumetric flow

Water

Absolute pressure upstream of the valve (p1) in bar

Absolute pressure downstream of the valve (p2) in bar

Density (p) in kg/dm³

Flow rate (Q) in _nm³/h

Pressure differential (ΔP) in bar

Mass flow (G) in kg/h

Standard density (ρn) in kg/m³

Valve key value (KVs) in m³/h

Volume flow (Qn) in _nm³/h

Absolute temperature upstream of the valve (T1) in °C

Specific volume at p2 and t1 (V2) in m³/kg

Specific volume at p1/2 and t1 (V*) in m³/kg

Supercritical volumetric flow

Subcritical volumetric flow

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