LINE CONTROL VALVES 2 1/2 "AND LARGER Butterfly Valves: BUTTERFLY VALVES: These valves should be lugs or international standard IPS tubular connection ports, and are to be standardized according to US valve and fitting manufacturers Association MSS-SP67 standard; DN50 to DN300 DN 200 psi non-impact cold water and 150 psi DN350. Insulation-insulated body with 2-in. Longer tube made of cast iron or nodular Cast iron. The disc is made of aluminum bronze alloy with EPDM seat and seal, or EPDM coated disc with polymer coated valve body. The stem should be 400 series stainless steel, Stem exposed to the disc fasteners on the diameter of DN65 to DN150 should be configured with 10 position throttle control handle; diameter DN200 and above the butterfly valve should be configured gear operating mechanism. Lug structure and the tubular structure of the butterfly valve should be able to Used as a shut-off valve, and can be used under full pressure at the pipe end without the need for a downstream flange. 2 "-12" rated at least 200 psi non-shock cold water working pressure, 14 "and larger rated at 150 psi. Body to have 2" extended neck for insulating and to be cast iron or or Valve to have aluminum bronze alloy disc with EPDM rubber seat and seals; or EPDM rubber encapsulated disc with polymer-coated body. Stem shall be 400 series stainless steel and shall not have been stemmed to disc fasteners. sizes 2 1/2 "-6" shall be lever operated with 10-position throttling plate; sizes 8 "and larger shall have gear operators. Lug-style and grooved style shall be capable for use as as isolation valves and recommended by manufacturer for dead-end service at full Available valves: Lug body, aluminum bronze disc of the US NIBCO LD2000-3 butterfly valve (handle operating mechanism); LD2000-5 butterfly valve (gear operating mechanism); LD1000-5 Butterfly valve (gear operating mechanism), diameter DN350 above. Butterfly valve (handle operating mechanism); GD4765-5 butterfly valve (gear operating mechanism) ACCEPTABLE VALVES: Lug body, aluminum bronze disc NIBCO LD2000-3 (lever operator) ; Gear valve (LD2000-5); gear shaft (LD1000-5) 14 "and larger Grooved body, rubber-coated disc NIBCO GD4765-3 (lever operator); GD4765-5 (gear operator) : GATE, GLOBE / ANGLE VALVES: These valves operate at 125 psi and are manufactured to MSS-SP70 (Gate Valve) Standard or MSS-SP85 (Globe / Angle Valve) Standard, Flange Connections, Bolted bonnet, OS & Y, cast iron Body, bronze trim, body and bonnet Material complies with ASTM A 126 Class B Cast iron, filler and gasket, free from asbestos Valves to be Class 125 manufactured in accordance with MSS-SP70 (gate) or MSS-SP85 (globe / angle), flanged, bolted bonnet, OS & Y, iron body, bronze trimmed, with body and bonnet conforming to ASTM A 126 Class B cast The valve can be used: the United States NIBCO F-617-O gate valve NIBCO F-718-B globe valve NIBCO F-818-B angle valve ACCEPTABLE VALVES Angle NIBCO F818-B Check Valve: CHECK VALVES: Check valve diameter DN65 and above should be used in the swing-type structure, and in accordance with the American Society of Valve and Fitting Manufacturers MSS-SP71, 125 lb, Flanged, cast iron body and bronze trim in accordance with ASTM A 126 Class B, asbestos-free liner. Also available in flat construction with stainless steel spring, bronze disc, rubber seat, cast iron body to ASTM A 126 Class B standard or A 48 standard, 125- or 150-pound flange . Spring actuator check valve for pipe discharge. Swing check valves with external operating handle and spring actuator are used for sump, blowdown and storm drains. 2 1/2 "and larger shall be swing-type manufactured in accordance with MSS-SP71, Class 125, flanged ASTM A 126 Class B cast iron body with bronze trim, non-asbestos gasket. Spring-actuated valve to be used on pump discharge. Swing check with outside lever and spring to be used on Available valves: Swing US Nibo F-918-B check valve spring actuator plate type NIBCO W-920-W or KW-900-W check back Valves, or W-910-W Swing Check Valves with External Handles and Springs, or NIBCO F-918-BL & S or F-918-BLW Check Valves with Gravity Tie ACCEPTABLE VALVES: Swing-type NIBCO F918-B Spring-actuated wafer-type NIBCO W920-W or KW900-W or W910-W Swing-type with outside lever and spring or weight, NIBCO F918-BL & S or F918-BLW Flow Balance Valve: CIRCUIT BALANCING VALVES: Hot and cold water pipes System Diameters DN15 to DN50 flow balance valves should be based on the United States Neboke Model 1710 and diameters DN50 to DN300 should be based on the United States Neboke Model 737. Diameters DN15 to DN50 The material of the valve should be loss-resistant Zinc Brass or Bronze Diameter DN50 to DN300 Valves are made of cast iron with ANSI 125 lb. / lb. 150 lb. flange or pipe connections For applications where precise flow regulation and control are required The valve used should be a shut-off valve construction with a pressure-temperature rating of 121oC and cast iron at 175 psi and a bronze material at 121oC and 240psi at pressure-temperature ratings. Each valve should be equipped with two test ports, built-in check valve and protective bonnet. All flow balance valves feature visual position reading indicators and built-in operating position memory for repeat adjustment and control. Valves for heating and chilled water service shall be based on NIBCO Figure 1710, 1/2 "to 2" and NIBCO Figure 737 2 "to 12". 1/2 "to 2" valves shall be constructed of dezincification resistant brass or bronze alloy . 2 "to 12" valves will be constructed of iron with ANSI Class 125/150 flanged or grooved ends. All valves shall be globe style for precise regulation and control and rated 175 psi for Iron and 240 psi for Bronze at 250 ° F. Valves shall have two metering / test ports with internal check valve and protective caps. All valves must be equipped with visual position readout and memory stop for repeatable regulation and control. ); S-1710 flow balance valve (welding) NIBCO F737 flow balance valve (flange); G-737 (tubular) ACCEPTABLE VALVES: NIBCO T1710 (threaded); S1710 (solder) NIBCO F737 (flanged) ; G737 (grooved)
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