Flame and Gas Sensor

int flame=0;
int val=0;
 int Beep=9;
 int gas=1;
 int val2=1;
void setup() {
pinMode(Beep,OUTPUT);
pinMode(flame,INPUT);
}

void loop() {
val=analogRead(flame);
val2=analogRead(gas);
if(val>=600)
  {
   digitalWrite(Beep,HIGH);
   }else
   {
     digitalWrite(Beep,LOW);
    }
   delay(400);
if(val2>=400)
  {
   digitalWrite(Beep,HIGH);
   }else
   {
     digitalWrite(Beep,LOW);
    }
     delay(500);
}