9500/9505/9506
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Via Circonvallazione, 10 13018 Valduggia (VC), Italy Tel: +39 0163 47891 Fax: +39 0163 47895 www.vironline.com Variable orifice bronze double regulating valve Threaded F/F (ISO 228/1) Design according to BS7350 Tolerance on nominal Kv for completely open valve ±5% (see flow measurement section, test according to BS7350) Available in the following versions: Fig. 9500, with threaded and plugged drains (¼" ISO 7/1Rp) (allow later mounting of test points) Fig. 9505, with test points Fig. 9506, with test points (high pressure TP with drain) TR CU 010 compliant PN25 (Max 25bar up to 110°C, max 20bar above) Free of CE marking (cat. according to Art. 4.3 Dir. 2014/68/EU) Working conditions Suitable for: water, -10°C to +130°C below 0°C only for water with added antifreeze fluids over 100°C only for water with added anti-boiling fluids Not suitable for: gases group 1 & 2, liquids group 1 (Dir. 2014/68/UE) N. Part 1 Body 2 Balancing cone1 Gasket disc 3 4 Disc2 5 Disc O-ring2 6 Disc stem 7 Stem O-ring 8 Union2 9 Stem 10 Bonnet 11 Stop spring ring 12 Screw 13 Handwheel 14 Nut 15 Test point / plug Bronze DZR Brass PTFE DZR Brass EPDM Perox DZR Brass EPDM Perox DZR Brass Brass DZR Brass Spring Steel Steel ABS (blue) Zinc plated steel DZR Brass3 As a single piece as part of the stem for DN10 Test points with EPDM gaskets and polypropylene ties For Fig. 9506, equipped with TP with drain Fig. 9315 160323 Drawings, photos and data contained in this card are provided for information only. VIR reserves the right to change them without no

Suggested flow range applicability (BS7350) If used with measuring manometers different from those proposed by VIR please verify that sensibility of the measuring device is compatible with indicated minimum flow (see flow measurement paragraph) Regolazione volantino Low pressure test point High pressure test point Formula linking flow Q (in l/s) and measured at test points (in kPa). Kv depends on handwheel position as indicated on table. Minimum flow that can be measured for each diameter may be calculated by using in Valves are anyway designed for best performances when used on range...

Handwheel position Handwheel position Handwheel position Via Circonvallazione, 10 13018 Valduggia (VC), Italy Tel: +39 0163 47891 Fax: +39 0163 47895 www.vironline.com Drawings, photos and data contained in this card are provided for information only. VIR reserves the right to change them without notice.

Handwheel position Via Circonvallazione, 10 13018 Valduggia (VC), Italy Tel: +39 0163 47891 Fax: +39 0163 47895 www.vironline.com Drawings, photos and data contained in this card are provided for information only. VIR reserves the right to change them without notice.

Copy of the table presented in flow measurement paragraph TP Formula linking flow Q (in l/s) and theoretical valve Kv depends on handwheel position as indicated on table. Via Circonvallazione, 10 13018 Valduggia (VC), Italy Tel: +39 0163 47891 Fax: +39 0163 47895 www.vironline.com Drawings, photos and data contained in this card are provided for information only. VIR reserves the right to change them without notice.

To obtain the best performances valve must be installed on a pipe with its same nominal size preceded and followed by straight pipe lengths as per figure indications. Min 5xDN (10xDN if installed on pump outlet) Via Circonvallazione, 10 13018 Valduggia (VC), Italy Tel: +39 0163 47891 Fax: +39 0163 47895 www.vironline.com Drawings, photos and data contained in this card are provided for information only. VIR reserves the right to change them without notice.

By using diagram above is possible to esteem the presetting position of the valve with given design flowrate and headloss: 1) draw a straight line joining design flowrate and design headloss; 2) determine design Kv value as intersection of drawn line and Kv axis; 3) draw a straight horizontal line from intersection previously identified and the specific valve DN Axis; 4) intersection determines handwheel position to use for presetting. In the example for a design flowrate of 3m /h and determined for a DN32 valve Via Circonvallazione, 10 13018 Valduggia (VC), Italy Tel: +39 0163 47891 Fax:...