Model C Thermostatic Control Valve
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Typical applications • Lubricating oil temperature control • Jacket water high temperature (HT) • Secondary water low temperature (LT) • Heat recovery • Water saving applications • Boiler inlet temperature control • Co-generation, cooling towers • Temperature mixing or diverting • Engine and compressor cooling system Key benefits • No external power source required - Simple, low cost installation • No user setting needed - 'Fit and forget' solution • Small number of parts - Simple maintenance and low cost of ownership • Robust design capable of high vibration and shock applications • Easy installation, operates in any mounting position • Automatic self-sensing control with positive proportional valve action Accreditations available • PED Suitable for Group 1 & 2 liquids (Ensure materials are compatible) • ATEX <g> II 2G TX X • Complies with all relevant EU directives Key features • Flow rates of 0.3 - 13.1 m3/hr (1.3 - 57.7 US gpm) • Combinations available: - Housings in cast iron, aluminum, bronze, carbon steel, stainless steel • DN15 - DN40 (to" - 1 to") pipe sizes • Threaded and flanged connections • Tamper-proof temperature settings from 18°C - 113°C (65°F - 235°F) • Pressure ratings up to 72 bar (1050 psi)

AMOT Model C thermostatic valves are available in a wide selection of sizes and settings to fill a multitude of fluid temperature control requirements. These valves may be mounted in any position and use the proven expanding wax principle to actuate the 3-way temperature element assemblies. The model C valves may be used for diverting or mixing service. They make very economical temperature limiting valves to prevent scalding in hot water supply systems; such as in emergency water systems for labs. Radiant heating systems can use these valves in limiting water temperature to prevent...

Thermostatic Control Valve - Model C Applications Diverting Applications Mixing Applications When valves are used for diverting services, the inlet is Port A (temperature sensing port), with Port C being connected to the cooler, and Port B connected to the cooler bypass line. When valves are used for mixing service, Port C is the cold fluid inlet port from the cooler, Port B is the hot by-pass fluid inlet, and Port A the common outlet. Port A is the temperature sensing port and will mix the hot and cold fluids in the correct proportion so as to produce the desired outlet temperature leaving...

Flow rate (US gpm) - Water Kv is the flow coefficient in metric units. It is defined as the flow rate in cubic meters per hour (m3/hr) of water at a temperature of 16° Celsius with a pressure drop across the valve of 1 bar. The basic formula to find a valve's Kv is shown below: 2 Q sg Q = Flow in m3/hr Kv DP = Pressure drop (bar) " SG = Specific gravity of fluid (Water = 1.0) Kv = Valve flow coefficient (Metric units) Cv is the imperial coefficient. It is defined as the flow rate in US Gallons per minute (gpm) of water at a temperature of 60° Fahrenheit with a pressure drop across the...

Viscosity correction For the selection of valves for use with more viscous fluids than water, the following must be calculated in addition to using the previously mentioned formulae: • Viscosity Find the viscosity of the fluid to be used in the valve. This will generally be in centistokes (cST). ISO grade oil is easy to calculate as the grade no. is the viscosity. I.e. ISO VG 46 = 46 centistokes at 43°C (110°F) • Viscosity correction Once the viscosity value has been found, the flow coefficient correction factor can be established using the viscosity correction graph below. The correction...

Available versions Cast iron Temperature and element characteristics Element type and seal material

Specification Flow rate Body materials & pressure ratings Seal materials Mounting position Port connections Cast iron Bronze Aluminum Cast steel/stainless steel threaded Cast steel/stainless steel 150 lb flanged Cast steel/stainless steel 300 lb flanged Cast steel/stainless steel 600 lb flanged Buna N/Nitrile, Viton, and Neoprene Any orientation Below nominal temperature Above nominal temperature Threaded Flanged Ports A and B connected Ports A and C connected 15, 20, 25, 32 & 40 mm W", %" 1" 1 & 1W" Valve sizes (nominal bore) Recommended pressure drop Control temperatures Accreditations...

Model CM Model 1 V4 CCM A = Inlet port B = Bypass port C = Cooler portDimensions - mm (inches) Threaded dimensions Flanged models Model 1 V CF Dimensions - mm (inches) Flange dimensions NOTES: 1 See 'Port connection (D)' section in the How to Order table on page 8. Datasheet C Thermostatic Control Valve FEB18 Rev5.indd Page 10

A - Valve size D - Port connection G - Leakhole size B - Valve model E - Control temperature (°F) J - Special C - Body material F - Element and seal material Over time, exposure to foreign chemicals and particulate matter as well as prolonged operation at extreme conditions may reduce the effectiveness of the valve. At such time, AMOT Thermostatic Valves can be restored to original performance by installing an AMOT thermostatic valve service kit or a seal kit and new temperature element(s). Service kits are ONLY available for purchase from the Americas and Canada locations. If...

Seal kit model number structure 2 If your port connection code does not correspond with the given values, please contact the facility to confirm your port connection code. 3 If your element/seal material code does not correspond with the given values, please contact the facility to confirm your element/seal material code.

NOTES: 4 Does NOT include CFRK, CFSK, or CLSK models. 5 CMA, CMR, CMS, CLA, CLR, CLS models ONLY. 6 CCM model requires 2 sets of parts. Please purchase 2 seal kits in order to properly service the CCM model valve.