JRGURED 1140 - Pressure reducing valves

JRG Valves JRGURED 1140 Pressure reducing valves

Design and operation 1 1 Cover of top 2 2 Turning nipple 3 Spring 4 Membrane 3 5 Valve stem 6 Valve seat 7 Rubber disc 8 Valve cone 9 Plug 10 Piston 4 10 5 6 7 8 9 The JRGURED 1140 pressure reducing valve is a balanced Cero-flow condition single seat valve. The upstream pressure acts equally When there is no flow, the downstream pressure is abso- against valve cone 8 and piston 10 and therefore, the open- lutely identical with the valve setting. The downstream ing and closing action of the valve is controlled only by the pressure acting against the underside of membrane 4 down-stream pressure acting on the underside of the pulls with the valve stem 5 the rubber disc 7 against the membrane 4. valve seat 6 and the flow is interrupted. Therefore variations in the upstream pressure will have no effect on the downstream pres- sure within the operating limits.

Flow condition Turning nipple 2 counter-clockwise will lower the down- When a valve on the downstream side of the reducing valve stream pressure, whereas turning clockwise will increase is opened the reduced pressure will fall below the setpoint. the downstream pressure. The new downstream pressure This means that the pressure under the membrane 4 is re- can be checked at cero-flow with a pressure gauge. duced, and the spring 3 will tend to open the valvei.e. be- tween the valve seat 6 and the rubber disc 7. This allows an Special model increased flow, which will restore the optimal downstream Please ask for special models not according the standard pressure. models, an offer. Operating instructions Important: A strainer has to be installed in front of the pressure reducing valve. (Suitable strainer JRG 1850) Installation The JRGURED pressure reducing valve will operate in any position. Before installation: Rinse pipes thoroughly After installation: Rinse entire water system at maximum capacity in order to remove all air. Maintenance Under normal operating conditions JRGURED pressure re- ducers do not require any special maintenance. However, the separately installed strainer has to be cleaned from time to time according to the amount of dirt in the water. After removing plug 9 and disc holder 8 the rubber disc 7 can be replaced. Maximum temperatures For water up to 70°C (158°F) For air up to 50°C (122°F) Standard pressure setting 400 kPa (4 bar) On request the manufacturer can easily supply valves with other pressure settings. With the standard spring from 150 kPa (1.5 bar) to 600 kPa (6 bar) and with the special spring from 650 kPa (6.5 bar) to 1’000 kPa (10 bar). The downstream pressure set at the factory is indicated on the cover 1. Modification of the downstream pressure Relieve pressure on both sides of the valve. After removing the cover 1 at the top of the valve the pressure can be ad- justed with a 36 mm box spanner within the limits as shown on the graph for the downstream pressure area.

Sizing the valve Q Flow quantity In domestic water installations with high living comfort, Example 1 velocity in the pipes should be between 1 and 2 m/s (3,3 and Which JRGURED pressure reducing valve should be 6,6 ft/s). Using the adjacent graph, the valve size, the ve- chosen for a water flow of 240 l/min. locity and flow quantity can be determined. Solution 1 Starting at the figure 240 on the quantity scale and moving up vertically to the shaded area between velocities of 1 and 2 m/s the DN 65 (2½”) – line will be intersected. From this intersection point the respective velocity of 1.2 m /s (4ft/s) will be found when moving horizontally to the velocity scale. Example 2 What is flow quantity in l/min through a JRGURED pressure reducing valve DN 80 (3”) at a velocity of 2 m/s (6,6 ft/s)? Solution 2 Starting at the figure 2 m/s on the velocity scale move horizontally to the right until the DN 80 (3”) – line is intersected. Now move down to the quantity scale and read that the flow under this condition is 600 l/min. Flow velocity v [m/s]

Determination of pressure drop m3/h 2 3 4 5 6 8 10 20 30 40 50 60 80 100 120 150 1.5 65 80 100 1 100 0.9 90 0.8 80 0.7 70 0.6 60 0.5 50 0.4 40 0.3 30 0.2 20 0.1 10 l/min 30 40 50 60 80 100 200 300 400 500 600 800 1000 2000 2500 l/s 0.5 1 2 3 4 5 10 15 20 30 40 Q Flow quantity PressuDrreu sckeetitnisntgel l6u0n0g /64000/4 0k0P kaP (a6 (/64/4 b bar) After sizing the valve as described above using chart 1 it is Example possible to determine the pressure drop on the adjacent What is the pressure drop through a DN 80 (3”) JRGURED chart. pressure reducing valve at a flow of 550 l/min. Solution Starting at the figure of 550 l/min on the quantity scale, moving up until the intersection with the line for the DN 80 (3”) valve.Moving horizontally to the right or left to the pressure drop scale it is seen that the pressure drop for a flow of 550 litre/min through DN 80 valve is 0.5 bar. Pressure drop Δp [bar] Pressure drop Δp [kPa]

Pressure reducing valve and return flow inhibitor JRGURED pressure reducing valve, PN 16 made of gunmetal, with flanges according SN EN 1092-2 drilled, seat made of stainless steel, on both site with manometer connections. Delivery without gaskets. Manometer and manometer valves see page 7. JRG Code GF Code DN d1 d2 d3 h1 h2 l1 l2 kg 1140.065 350542301 65 65 187 Rp ¼ 128 340 290 145 4 28.000 1140.080 350542401 80 80 217 Rp ¼ 144 405 310 155 8 43.000 1140.100 350542501 100 100 257 Rp ¼ 166 465 350 175 8 66.000 l1 Adaptor piece for 1430/1440 to 1140 made of gunmetal, incl. special screws and flat gaskets. d1 d2 s JRG Code GF Code DN d1 d2 l1 kg 1146.065 355635903 65 65 127 92 4 4.100 1146.080 355635904 80 80 142 102 8 6.200

Pressure reducing valve and return flow inhibitor ° d 2 Return flow inhibitor, PN 16d 3 with flanges, threaded connection for test and drain valve, h closed with closure plug 5149, without test and drain valve, made of bronze, backing flange made of PP with d1 d4 d5 steel ring, with profile flange gaskets made of EPDM*, d 3 stainless steel valve seat and closing spring, plastic return flow inhibitor, PPSU baffle, EPDM seals, for water l 2 l 3 up to 90°C, opening pressure less than 50 mbar, tested l 1 according DIN EN 13959, noise tested, valve sound group 1. * EPDM gaskets must not be oiled or greased. JRG Code GF Code DN d1 d2 d3 d4 d5 h l1 l2 l3 kg 1614.040 350898304 40 Rp 1/4 G 1 1/2 Rp 1/4 110 150 90.5 229 94 135 6 4.239 1614.050 350898305 50 Rp 1/4 G 2 Rp 1/4 125 165 107 262 104 158 6 6.660 1614.065 350898306 65 Rp 1 G 2 1/2 Rp 1/4 145 185 116 296 109.5 186.5 6 9.460 Slanted filter, PN 16 made of gunmetal, with flanges, with profile flange gaskets made of EPDM*, backing flange made of PP with steel ring, large surface strainer, made of stainless steel mesh, for water, air, etc. up to 100°C. * EPDM gaskets must not be oiled or greased. JRG Code GF Code DN/d1 d2 d3 d4 h l1 l2 l3 µm kg 1814.040 350871340 40 G 1 1/2 110 150 89 229 94 135 250 4x ∅18 4.170 1814.050 350871350 50 G 2 125 165 110.5 262 104 158 250 4x ∅18 6.580 1814.065 350871365 65 G 2 1/2 145 185 122 296 109.5 186.5 560 4x ∅18 9.460 1814.080 350871380 80 G 3 160 200 136 333 121.5 211.5 560 4x ∅18 12.690

Check-valve 1650 Check-valve, PN 16 made of grey cast iron, plastic coated, with flanges drilled in accordance with SN EN 1092-2, cone made from gunmetal, lip gasket made of NBR, test and drain plugs. For water up to 90°C, for compressed air and other media up to 70°C. JRG Code GF Code DN d1 d2 l1 kg 1650.040 355635557 40 150 G 1/4 180 4 9.000 1650.050 355635558 50 165 G 1/4 200 4 11.000 1650.065 355635559 65 185 G 1/2 240 4 16.500 1650.080 355635560 80 200 G 1/2 260 8 20.500 1650.100 355635561 100 230 G 1/2 300 8 28.500 1650.125 355635562 125 250 G 3/4 350 8 41.000 1650.150 355635563 150 285 G 3/4 400 8 60.000 100 80 60 50 40 30 20 10 8 6 5 4 3 2 1 Volume flow V Pressure drop Dp (bar) Pressure drop Dp (kPa)

Slanted filter 1850 Slanted filter, PN 16 made of grey cast iron, plastic coated on the outside and inside, flanges drilled in accordance with SN EN 1092-2, filter sieve made of rust-free steel 500 μm, to 90°C. Minimum distance for the dismantling of the fine filter: 2 x h1. JRG Code GF Code DN d1 d2 h1 l µm kg 1850.065 355635558 65 65 185 179 290 4 500 15.000 1850.080 355635565 80 80 200 203 310 8 500 22.000 1850.100 355635566 100 100 220 220 350 8 500 30.000 100 80 60 50 40 30 20 10 8 6 5 4 3 2 . 1 Volume flow V Pressure drop Dp (bar) Druckverlust Dp (kPa)

Overview manometer valves d 2 Manometer valve, PN 1600 kPa (16 bar) made of brass, with push button, for water and air up to 100°C, suitable to 1140-1142 DN 65/80/100. d 1 l JRG Code GF Code DN GN d1 d2 l kg 8103.010 350260504 8 1/4 R 1/4 Rp ¼ 60 0.170 Manometer d for water and air up to 60°C. h h 1 d 1 JRG Code GF Code GN d d1 h h1 bar kg 8107.080 350678901 ¼ 40 R ¼ 38 12 0-12 0.075 8107.081 350110601 ¼ 50 R ¼ 44 12 0-12 0.120 8107.082 350110602 ¼ 50 R ¼ 44 12 0-25 0.120 8107.083 350544702 ¼ 63 R ¼ 52 12 0-12 0.155 8107.084 350544701 ¼ 63 R ¼ 52 12 0-25 0.155 Type JRG Code Dimension Pressure Manometer valve Manometer DN 65 1 1140 DN 80 0-12 bar0-25 bar2 8103.01 0 8107.083 DN 100 8107.084 1 Secondary pressure 2 Primary pressure

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