Common use of Valves Clause in Contracts

Valves. A. Gate valves, globe valves, check valves and drawoff valves shall be Powell, Lunkenheimer, Crane, or approved equal. Figure numbers herein are ▇▇▇▇▇▇ numbers. 1. Gate valves 2-1/2" and larger shall be Figure 1793, 125#, I.B.B.M., solid wedge, O S & Y, rising spindle, flanged end. 2. Globe valves 2-1/2" and larger shall be Figure 241, 125#, I.B.B.M., O S & Y with regrind - renew beveled bronze disc and seat ring, flanged end. 3. Check valves 2-1/2" and larger shall be Figure 559, 125#, I.B.B.M., horizontal swing type, with regrind-renew bronze seat ring and disc, flanged end. 4. Check valves 2" and smaller shall be Figure 578, 125# bronze, horizontal swing type with regrinding bronze seat and disc, screwed end. 5. Draw-off valves shall be Figure 503H, bronze, screwed inlet, hose outlet. B. Valves 2" and smaller shall be ball valves. Ball valves shall be ▇▇▇▇▇▇▇ Figure 32-A, Crane, ▇▇▇▇▇▇▇▇ or approved equal, bronze ball valves with bronze ball, Teflon seats, brass stem and cadmium plated steel handle with plastic grips. C. Pressure-reducing Valves 1. ▇▇▇▇ and ▇▇▇▇▇▇▇, ▇▇▇▇▇▇▇▇▇, Taco or equal. 2. Diaphragm operated pressure-reducing valve with low inlet pressure check valve and inlet strainer. The strainer shall be easily removable without system shutdown. The valve seat, strainer and stem shall be removable and of non-corrosive material. The body shall be brass. The valve shall be full line sized as shown on the Drawings. Pressure setting to be minimum system operating pressure. D. Multi-Purpose Pump Discharge Valves (furnish at the discharge of all hydronic heating pumps) 1. ▇▇▇▇ and Gossett, ▇▇▇▇▇▇▇▇▇, Taco or Equal 2. Valves to be designed to permit tight system shutoff and then return to original balance point after shutdown, to perform as a spring-loaded non-slam check valve and to perform as a plug-type flow control valve. Valve to be able to be repacked under full pressure. Valve to be suitable for use in heating systems with working temperatures up to 230 ºF. 3. Valve to have flanged, ductile-iron body, bronze disc and seat, stainless steel stem and spring. Valve body to be furnished with two 1/4" plugged drain tappings. 4. Valves shall be equipped with ▇▇▇▇▇▇▇▇ valve metering connections to facilitate differential pressure readings across the valve orifice for accurate system balancing. 5. Each valve to be furnished with a pre-formed removable PVC insulation jacket with high density fiberglass insulation suitable for temperatures up to 230 ºF continuous.

Valves. A. Gate valves, globe valves, check valves and drawoff valves shall be Powell, Lunkenheimer, Crane, or approved equal. Figure numbers herein are ▇▇▇▇▇▇ numbers. 1. Gate valves 2-1/2" and larger shall be Figure 1793, 125#, I.B.B.M., solid wedge, O S & Y, rising spindle, flanged end. 2. Globe valves 2-1/2" and larger shall be Figure 241, 125#, I.B.B.M., O S & Y with regrind - renew beveled bronze disc and seat ring, flanged end. 3. Check valves 2-1/2" and larger shall be Figure 559, 125#, I.B.B.M., horizontal swing type, with regrind-renew bronze seat ring and disc, flanged end. 4. Check valves 2" and smaller shall be Figure 578, 125# bronze, horizontal swing type with regrinding bronze seat and disc, screwed end. 5. Draw-off valves shall be Figure 503H, bronze, screwed inlet, hose outlet. B. Valves 2" and smaller shall be ball valves. Ball valves shall be ▇▇▇▇▇▇▇ Figure 32-A, Crane, ▇▇▇▇▇▇▇▇ or approved equal, bronze ball valves with bronze ball, Teflon seats, brass stem and cadmium plated steel handle with plastic grips. C. Pressure-reducing Valves 1. ▇▇▇▇ and ▇▇▇▇▇▇▇, ▇▇▇▇▇▇▇▇▇, Taco or equal. 2. Diaphragm operated pressure-reducing valve with low inlet pressure check valve and inlet strainer. The strainer shall be easily removable without system shutdown. The valve seat, strainer and stem shall be removable and of non-corrosive material. The body shall be brass. The valve shall be full line sized as shown on the Drawings. Pressure setting to be minimum system operating pressure. D. Multi-Purpose Pump Discharge Valves (furnish at the discharge of all hydronic heating pumps) 1. ▇▇▇▇ and Gossett, ▇▇▇▇▇▇▇▇▇, Taco or Equal 2. Valves to be designed to permit tight system shutoff and then return to original balance point after shutdown, to perform as a spring-loaded non-slam check valve and to perform as a plug-type flow control valve. Valve to be able to be repacked under full pressure. Valve to be suitable for use in heating systems with working temperatures up to 230 ºF. 3. Valve to have flanged, ductile-iron body, bronze disc and seat, stainless steel stem and spring. Valve body to be furnished with two 1/4" plugged drain tappings. 4. Valves shall be equipped with ▇▇▇▇▇▇▇▇ valve metering connections to facilitate differential pressure readings across the valve orifice for accurate system balancing. 5. Each valve to be furnished with a pre-formed removable PVC insulation jacket with high density fiberglass insulation suitable for temperatures up to 230 ºF continuous.