How to create a mixer block in Simscape that mixes two fluids and leaves as one?

component mixer

nodes
    A = mysimscape.thermohydraulic.thermohydraulics; % A:right
    B = mysimscape.thermohydraulic.thermohydraulics; % B:right
    C = mysimscape.thermohydraulic.thermohydraulics; % C:left
end

parameters
    density = {1000, 'kg/m^3'};
    cp = {4.19, 'kJ/(kg*K)'};
end

variables(Access = protected)
    qf1 = { 0 ,'m^3/s' };   % Flow rate 1
    qf2 = { 0 ,'m^3/s' };   % Flow rate 2
    qf3 = { 0 ,'m^3/s' };   % Flow rate 3

      Phi1 = { 0, 'kW'}; 
      Phi2 = { 0, 'kW'};
      Phi3 = { 0, 'kW'};
  end

branches
    qf1 : A.qf -> *;
    qf2 : B.qf -> *;
    qf3 : C.qf -> *;
end

equations

      % No pressure drop
      A.p == C.p;
  %     B.p == C.p;

      % Energy flow equations
      Phi1 == qf1 * density * cp * A.t;
      Phi2 == qf2 * density * cp * B.t;
      Phi3 == qf3 * density * cp * C.t;

      % Energy conservation
      Phi1 + Phi2 + Phi3 == 0;

      % Mass conservation
      qf1 + qf2 + qf3 == 0;
  end
  end

Is this code correct? My domain is a customised thermohydraulic domain that includes variables p, t and q.